Pages signed under “Approval” in section Index of revisions and List of valid pages
Authority: SLO.DOA.002
Signature:
(pages 4 and 5 of this manual) are approved by:
Stamp:
Original date of Approval: March, 2011
This aircraft is to be operated in compliance with information and limitations contained herein.
The original English Language edition of this manual has been approved as operating instruction
according to “Pravilnik o ultralahkih letalnih napravah” of Republic of Slovenia.
Approval of translation has been done by best knowledge and judgement.
TAURUS ELECTRO
4
REV. 3
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Index of revisions
Enter and sign the list of revised pages in the manual into the spaces provided below. All revised pages
should be clearly designated in the upper right corner of the page, also, any changes in page content
should be clearly visible (e.g. marked with a bold black vertical line).
Name of
revision
Original/
1
Revision 2
Revision 3
Reason for
Revision
Reordering of
chapters to
comply with
ASTM F2746-12
Temperature
Various
Updates
Operating
Change
Revision No.,
date
Rev. 0
27 October, 2012
Revision 1
1 May 2013
Revision 2
31 January, 2014
Revision 3
24 April, 2015
Affected
Approval,
Description
pages
First original release./Tomazic
Version No. 1AllCoates. M
Revision 2AllCoates M
Revision 3AllCoates M
signature
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List of valid pages
This manual contains 96 original and revised pages listed below.
This manual is valid only if it contains all of the original and revised pages listed above.
Each page to be revised must be removed, shredded and later replaced with the new, revised page in
the exact same place in the manual.
TAURUS ELECTRO
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Table of contents
1 General
2 Limitations
3 Emergency procedures
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4 Normal procedures
5 Performance
6 Weight and balance
7 Description of aircraft & systems
8 Handling and maintenance
9 Appendix
10 Supplements
TAURUS ELECTRO
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General
Introduction
Notes and remarks
TAURUS ELECTRO
General
9
REV. 3
Technical data
3-view drawing
TAURUS ELECTRO
10
General
REV. 3
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Introduction
This manual contains all information needed for appropriate and safe use of the Taurus Electro Aircraft.
IT IS MANDATORY TO CAREFULLY STUDY THIS MANUAL PRIOR TO USE
OF THE TAURUS AIRCRAFT
In case of aircraft damage or personal injury resulting from disobeying instructions in the manual
PIPISTREL d.o.o. Ajdovscina denies all responsibility.
All text, design, layout and graphics are owned by PIPISTREL d.o.o. Ajdovscina Therefore this manual
and any of its contents may not be copied or distributed in any manner (electronic, web or printed)
without the prior consent of PIPISTREL d.o.o. Ajdovscina unless they are directly related to the operation of our aircraft by an owner or his appointed maintenance authority.
Notes and remarks
Safety definitions used in the manual:
WARNING! DISREGARDING THE FOLLOWING INSTRUCTIONS WILL LEAD TO SEVERE
DETERIORATION OF FLIGHT SAFETY AND HAZARDOUS SITUATIONS, INCLUDING SUCH
RESULTING IN INJURY AND LOSS OF LIFE.
CAUTION! DISREGARDING THE FOLLOWING INSTRUCTIONS WILL LEAD TO SERIOUS
DETERIORATION OF FLIGHT SAFETY.
Technical data
PROPORTIONSELECTRO
wing span14.97 m
length7.30 m
height (propeller extended)2.7 m
wing area12.26 m
vertical tail area0.86 m
horizontal stabilizer and elevator area1.275 m
aspect ratio18.30
positive flap deflection (down)5°, 9 °, 18 °
negative flap deflection (up)-5°
centre of gravity (% of MAC)23% - 45%
2
2
2
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3-view drawing
TAURUS ELECTRO
General
11
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Dimensions in millimeters
TAURUS ELECTRO
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Limitations
TAURUS ELECTRO
Introduction
Operational velocities
Motor
Limitations
13
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Weight limits
Centre of gravity limits
Manoeuvre limits
G-load factors
Cockpit crew
Types of operations
Minimum equipment list
Other restrictions
Warning placards
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Limitations
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Introduction
This chapter provides information about operational restrictions, instrument markings and basic
knowledge on safe operation of aircraft, motor and on-board appliances.
Operational velocities
Speed limits
VNE
VPE
VPO
VRA
VA
VFE
VAE
VLO
Velocity
Velocity never to be
exceeded
Max. speed with
powerplant extended
Max. speed to extend
or retract powerplant
Maximum safe velocity
in rough air
Maneuvering velocity
Max. velocity flaps
extended
Max. velocity of
airbrake extension
Max ldg. down speed
IAS
[km/h (kts)]
225 (121)
120 (65)
100 (54)
163 (88)
163 (88)
130 (70)
163 (88)
163 (88)
Remarks
Never exceed this speed. Should the VNE be
exceeded, land as soon as possible and have
the aircraft verified for airworthiness by authorised service personnel.
Do not exceed this speed with powerplant
extended.
Do not extend or retract powerplant above
this speed.
Also known as Vb. Turbulence penetration
speed.
Do not use rough or full stick and
rudder deflections above this speed.
Do not exceed this speed with +5° or T flaps
extended. (VFE for L flaps is 110 km/h (59 kts))
Do not extend spoilers above this
speed. Once fully extended, VNE is the limit.
Do not fly with landing gear extended
above this speed
Airspeed indicator markings
MARKINGIAS [km/h (kts)]Definition
Speed range where flaps may be extended. Lower end is de-
white arc
green arc
yellow arc
69 - 130
(37 - 70)
78 - 163
(42 - 88)
163 - 225
fined as 110% of VS (stall speed in landing configuration at
MTOM), upper end of speed range is limited by VFE
(see above).
Speed range of normal operation. Lower end is defined as
110% of VS1 (stall speed at MTOM with flaps in neutral position), upper end is limited by VRA (see above).
Manoeuvre the aircraft with great caution in calm air only.
(88 - 121)
red line
225
Maximum speed allowed.
(121)
blue line
100 (54)
Best climb rate speed (VY)
WARNING!ABOVE PRESSURE ALTITUDE OF 1000 METERS 3300 FT ALL SPEED LIM
ITSMUST BE TREATED AS TRUE AIRSPEED TAS.
INDICATED AIRSPEED IAS MUST BE REDUCED ACCORDINGLY!
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TAURUS ELECTRO
Indicated airspeed (IAS) to true airspeed (TAS) relation
Airspeed indicator measures the difference between total and static pressure (also called dynamic
pressure), which does not only change as speed increases, but is also linked with altitude. Flying
at high altitudes, where the air is getting thinner, results in incorrect airspeed being indicated. The
indicated airspeed value is actually lower than the true airspeed to which the aircraft is exposed.
The higher you fly, the bigger the difference between IAS and TAS. Be aware of this effect especially
when flying at high altitude at high speeds, not to exceed VNE unawarely. Bear in mind this can happen even with the indicator still pointing within the yellow arc!
VNE at altitude (standard ICAO atmosphere)
The tables below indicate IAS to TAS relation for an altitude span of 0 - 5000m (0 - FL165) in different
atmospheres (variable is temperature). TAS is a constant of 225 km/h (122 kts) - VNE for the entire tables.
WARNING! RESPECT THE LISTED VALUES AT ALL TIMES, NOT TO EXCEED FLUTTER CRITI
CAL SPEED.
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Limitations
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Motor/controller, Battery System
Motor types: ELECTRO 40/30
WARNING! The motor is not certified for aviation use, therefore, there is no
assurance it cannot fail in its operation at any given moment, without prior notice.
The motor
TEMPERATURE °C / ELECTROMOTORELECTRO 40/30
maximum take-off power (1 min)40 kW
maximum continuous power30 kW
maximum operating temperature100° C
maximum ambient temperature40° C
RPMELECTRO 40/30
maximum allowable2200
take-off rpm (typical)2150
climb rpm (typical)1900
Controller
POWER CONTROLLERELECTRO 40/30
maximum operating temperature75° C
recommended max continuous temperature45-55° C
WARNING! DO NOT, UNDER ANY CIRCUMSTANCES, ATTEMPT TO USE ANY OTHER
BATTERIES, OTHER THAN PIPISTREL FACTORY ORIGINAL BATTERY SYSTEM, WITH THIS MOTOR/
CONTROLLER
Battery system
Battery systemStandard
Maximum voltage285 V
Minimum voltage204 V
Recommended voltage range for storage240 V - 260 V
Maximum operating temperature70° C
Minimum operating temperature5° C
Allowable temperature range for storage10°C - 40° C
CAUTION! TEMPERATURES BELOW 10°C WILL RESULT IN DECREASE OF BATTERY CAPACITY.
PLAN YOUR FLIGHT ACCORDINGLY.
WARNING! DO NOT, UNDER ANY CIRCUMSTANCES, ATTEMPT TO CHARGE THE BATTERIES
WITH ANY THIRD PARTY CHARGERS. ONLY PIPISTREL ORIGINAL EQUIPMENT MUST BE USED.
WARNING! RESPECT OPERATING AND STORAGE TEMPERATURE LIMITS AT ALL TIMES.
FAILURE TO DO SO MAY RESULT IN BATTERY DAMAGE.
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Propeller
TAURUSELECTRO
fixed pitch (wooden or composite)1650 mm
Motor instrument markings
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Limitations
17
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Instrument
Tachometer (RPM)
Controller temp. (°C)
Battery system temp (°C)
Red line
(minimum)
Not Applicable
Not Applicable
5
Green arc
(normal)
0-2150
5-55
10-50
Yellow arc
(caution)
2150-2200
55-70
50-70
(maximum)
Weight limits
Taurus electro basic model weights
WEIGHTELECTRO
empty aircraft weight (incl. parachute rescue system), std battery system306 kg
empty aircraft weight (incl. parachute rescue system), optional batteries sys.323 kg
max. takeoff weight (MTOW/MTOM)550 kg
minimum combined cockpit crew weight (depends on C.G. of empty aircraft)see p. 55
maximum combined cockpit crew weight (depends on C.G. of empty aircraft)see p. 55
water balance reservoir (max weight)9 kg
allowable luggage weight10 kg
Red line
2200
70
70
WARNING! SHOULD ONE OF THE ABOVELISTED VALUES BE EXCEEDED, OTHERS MUST BE
REDUCED IN ORDER TO KEEP MTOM BELOW 550 KG. MAKE SURE MAXIMUM AND MINIMUM
COCKPIT CREW WEIGHT AS WELL AS AVAILABLE LUGGAGE WEIGHT ARE ALWAYS KEPT WITHIN
ALLOWABLE LIMITS. FAILING TO COMPLY WITH ANY OF THE WEIGHT LIMITATIONS MAY RESULT
IN AIRCRAFT BEING UNCONTROLLABLE ON GROUND AND/OR IN FLIGHT DUE TO EXTREME
CENTRE OF GRAVITY POSITION.
WARNING! CHECK THE WATER BALANCE RESERVOIR IN FRONTCABIN AND VERIFY
CREW’S WEIGHT BEFORE EVERY FLIGHT AS IT MAY INFLUENCE THE CENTRE OF GRAVITY OF
AIRCRAFT TO THE POINT WHERE IT IS NO LONGER CONTROLLABLE!
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Limitations
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Centre of gravity limits
•
Aircraft's safe centre of gravity position ranges between 23% and 45% of MAC (Mean
Aerodynamic Chord)
•
C.G. point ranges between 238 mm and 429 mm aft of datum, datum is leading edge
of wing root.
Manoeuvre limits
Taurus Electro is certified as an Ultralight aircraft. Therefore, no aerobatic manoeuvres
are permitted.
WARNING! FLYING IN CONSIDERABLE SIDESLIP WHEN THE MOTOR IS EXTENDED AND
RUNNING MAY DAMAGE THE MOTORPROPELLER ASSEMBLY. YOU ARE STRONGLY DISCOUR
AGED FROM SIDESLIPPING WHEN MOTOR IS EXTENDED AND RUNNING!
G-load factors
max. positive wing load:+ 5.3 G+ 4.0 G
max. negative wing load:– 2.65 G– 1.5 G
Cockpit crew
•
Actual minimum and maximum combined cockpit crew weight heavily depend on the
centre of gravity of an empty aircraft. Minimum and maximum combined cockpit crew
weight is determined after weighing the aircraft each time. Procedure for the determination of minimum and maximum combined cockpit crew weight can be found on
page 57 of this manual. Inside the cockpit, there must be a clearly visible placard stating
the minimum and maximum combined weight of the crew.
•
Maximum takeoff weight (MTOW) MUST NOT, under any circumstances, exceed 550 kg.
at VAat VNE
Types of operations
Taurus Electro is built to fly under day visual flight rules
(day VFR). Flight into known icing conditions or rain is prohibited.
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WARNING! SHOULD YOU FIND WATER DROPS ON THE AIRFRAME DURING PREFLIGHT
CHECKUP AT TEMPERATURES CLOSE TO FREEZING, YOU MAY EXPECT ICING TO APPEAR IN
FLIGHT. AIRBRAKES ARE ESPECIALLY PRONE TO ICING UNDER SUCH CIRCUMSTANCES. AS
WATER MAY ACCUMULATE UNDERNEATH THE TOP PLATES, SPOILERS MAY FREEZE TO THE
WING SURFACE. SHOULD THIS OCCUR, YOU WILL MOST DEFINITELY BE UNABLE TO EXTEND
SPOILERS BEFORE THE ICE MELTS. THEREFORE, FLYING UNDER CIRCUMSTANCES MENTIONED
ABOVE, IT IS RECOMMENDED TO EXTEND AND RETRACT THE SPOILERS IN FLIGHT FREQUENT
LY TO PREVENT ITS SURFACE FREEZING TO THE AIRFRAME.
Minimum equipment list
• Airspeed indicator (functional)
• Altimeter (functional)
• Compass (functional)
• Electric System Manager instrument (ESYS-MAN)
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Limitations
19
REV. 3
• Battery Management System (BMS, functional)
• Parachute rescue system (where required legally)
Other restrictions
Due to flight safety reasons it is forbidden to:
•
fly in any rainfall;
•
fly during thunderstorm activity;
•
fly in a blizzard;
•
fly according to instrumental flight rules (IFR) or attempt to fly in zero visibility conditions (IMC);
•
fly when outside air temperature (OAT) reaches 50°C (122°F )or higher;
•
perform any form of aerobatic flying;
•
take off and land with flaps retracted or set to negative (-5°) position;
•
take off with spoilers extended.
•
store the aircraft outside in the rain.
Warning placards
Taurus Electro is categorized as an Ultralight aircraft and must display a
warning placard as such. The placard indicates the aircraft is not certified
according to EASA standards and is therefore flown completely at pilot’s
own risk.
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20
Limitations
REV. 3
Placards
EGRESS
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This aircraft is equipped
with a rocket powered
ballistic rescue system.
This aircraft is equipped
with a rocket powered
ballistic rescue system.
EXPLOSIVE
DANGER
max useful loadkg
max cockpit load
without water ballast
min cockpit load
without water ballast
Reduce min cockpit load for 2.3 kg per each litre of
water ballast. Remove water ballast for duo flight!
kg
kg
EAW
MTOW
CREW WT
LUGGAGE WT
VSO
VS1
VFE
VA
VNO
550 kg
see POH
10 kg
PULL FOR PARACHUTE
WARNING
DEPLOYEMENT
DEPLOYEMENT INSIDE
ROCKET FOR PARACHUTE
N
030
060
34 kts
VNE
40 kts
70 kts
120 kts
82 kts
Respect limits
82 kts
from POH!
EAW
kg
MTOW
CREW WT
LUGGAGE WT
1212 lbs
see POH
22 lbs
lbs
W
S
E
300
120
210
330
150
240
N
W
E
S
030
300
120
210
060
330
150
240
pilot min. kg
baggage max. 2kg
secure baggage at all times!
with 9 kg nose ballastkg
pilot max. kg
with 9 kg nose ballastkg
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Emergency procedures
Introduction
Stall recovery
Spin recovery
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Emergency procedures
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Motor failure
Landing out
Motor fire
Smoke in cockpit
ESYS-MAN failure
Landing gear failure
Flutter
Exceeding VNE
Parachute rescue system
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Emergency procedures
REV. 3
Introduction
This chapter provides information on how to react when confronted with typical flight hazards.
Stall recovery
First reduce angle of attack by easing-off on the control stick, then
1. If the motor is running, add full power.
2. Resume horizontal flight.
Spin recovery
Taurus Electro is constructed in such manner that it is difficult to be flown into a spin. However, once
spinning, react as follows:
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1. If the motor is running, reduce throttle to idle.
2. Apply full rudder deflection in the direction opposite the spin.
3. Lower the nose towards the ground to build speed (stick forward).
4. As the aircraft stops spinning neutralise rudder deflection.
5. Slowly pull up and regain horizontal flight.
Taurus Electro tends to re-establish normal flight by itself usually after having spun for a mere 90°.
WARNING! KEEP THE CONTROL STICK CENTRED ALONG ITS LATERAL AXIS NO AILERON
DEFLECTIONS THROUGHOUT THE RECOVERY PHASE! DO NOT ATTEMPT TO STOP THE AIR
CRAFT FROM SPINNING USING AILERONS INSTEAD OF RUDDER!
WARNING! AFTER HAVING STOPPED SPINNING, RECOVERING FROM THE DIVE MUST BE
PERFORMED USING GENTLE STICK MOVEMENTS PULL, RATHER THAN OVERSTRESSING THE
AIRCRAFT. HOWEVER, VNE MUST NOT BE EXCEEDED DURING THIS MANOEUVRE.
When the aircraft is straight and level resume normal flight.
Motor failure
Motor failure during takeoff or initial climb
Ensure proper airspeed by lowering the nose and land the aircraft in runway heading, avoiding obstacles in your way. Set master switch to OFF position (key full left).
Land straight ahead.
WARNING!DO NOT CHANGE COURSE OR MAKE TURNS IF THIS IS NOT OF VITAL
NECESSITY! AFTER HAVING LANDED SAFELY, ENSURE PROTECTION OF AIRCRAFT AND VACATE
THE RUNWAY TO KEEP THE RUNWAY CLEAR FOR ARRIVING AND DEPARTING TRAFFIC.
DO THIS CALMLY AND CAREFULLY NOT TO CAUSE DAMAGE TO YOURSELF AND EQUIPMENT.
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Emergency procedures
Motor failure in climb
First ensure proper airspeed by lowering the nose, then start scanning the terrain underneath and
choose the most appropriate site for landing out.
WARNING!THE DECISION WHERE TO LAND WHEN LANDING OUT IS FINAL! CHANGING
YOUR MIND EVEN IF YOU HAPPEN TO COME ACROSS A DIFFERENT, PERHAPS MORE APPROPRI
ATE LANDING SITE, SHOULD BE YOUR LAST RESORT.
Provided the motor fails aloft, first retract the propulsion unit and prepare for an
emergency landing if the conditions prevent you from gliding to the airport.
Emergency landing
Propulsion unit retracted
TAURUS ELECTRO
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REV. 3
1. Master switch OFF (key in full left position).
2. Fasten your seat belts tightly.
3. Approach and land with extreme caution with +10 km/h (+5 kts) airspeed reserve if
the chosen landing terrain length permits.
4. After landing exit the aircraft immediately.
Propulsion unit extended or refusing to retract
1. Your first priority is to fly the aircraft! Attempt to retract the propulsion unit by
setting the retraction switch up and back down IF your height is 300 m or higher.
Otherwise, proceed with emergency landing.
2. Fasten your seat belts tightly.
3. Master switch OFF (key in full left position).
4. Should the propulsion unit remain extended or partially retracted land the aircraft
onto the main wheels first in order to minimise vertical impact onto the propeller arm.
5. Fly no faster than minimum sink speed (94 km/h - 51 kts) during the approach as
more speed will only increase your rate of descent and use up to+10 km/h (+5 kts) airspeed reserve only before touchdown if the chosen landing terrain length permits.
The landing out manoeuvre MUST be preformed with regard to all normal flight parameters.
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Emergency procedures
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Fire
WARNING! USE ONLY WATERLESS FIRE EXTINGUISHING AGENTS TO EXTINGUISH ANY
FIRE ON THE AIRCRAFT!
Motor fire on ground
Should you encounter motor fire on ground, react as follows:
1. Come to a complete standstill, master switch OFF immediately and pull out the red
connector on the battery box behind the cockpit to disconnect the battery system.
Keep powerplant extended.
3. Exit the aircraft and start fire extinguishing with a waterless agent.
WARNING! AFTER THE FIRE HAS BEEN EXTINGUISHED DO NOT ATTEMPT TO RESTART THE
MOTOR.
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Motor fire in flight
1. Leave the motor extended and set master switch to OFF.
2. Open slide windows and set all ventilation devices to ON.
3. Perform side-slip (crab) manoeuvre in direction opposite the fire.
4. Perform emergency landing procedure and abandon the aircraft immediately.
Battery system fire
Land and abandon the aircraft as soon as possible.
WARNING! USE ONLY WATERLESS FIRE EXTINGUISHING AGENTS TO EXTINGUISH ANY
FIRE ON THE AIRCRAFT!
Smoke in cockpit
1. Leave the motor extended and set master switch to OFF.
2. Open slide windows and set all ventilation devices to ON for adequate breathing.
3. Land as soon as possible.
ESYS-MAN failure
With the motor retracted: Continue flying as a sailplane.
With the motor extended and not running: Look for a landing field to do a safe outlanding.
With the motor extended and running: Do not stop the motor. Fly to the next airfield and land.
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Emergency procedures
Landing gear failure
Should the landing gear fail to lower, fasten your seatbelts tightly and perform a landing procedure
as normal. Use full flaps to have the minimum possible speed at touch-down.
Flare at the same altitude like you would normally and in the same manner. Avoid obstacles (bumps,
fences etc. on the runway or strip where you are landing.
Flutter
Flutter is described as the oscillation of control surfaces. In most cases it is caused by abrupt control
deflections at speeds close or in excess of VNE. As it occurs, the ailerons, elevator or even the whole
aircraft start to vibrate violently.
Should flutter occur, pull on the stick (and reduce power immediately)!
WARNING! FLUTTERING OF AILERONS OR TAIL SURFACES MAY CAUSE PERMANENT
STRUCTURAL DAMAGE AND/OR INABILITY TO CONTROL THE AIRCRAFT.
AFTER A SAFE LANDING, THE AIRCRAFT MUST UNDERGO A SERIES OF CHECKUPS PER
FORMED BY AUTHORISED SERVICE PERSONNEL TO VERIFY AIRWORTHINESS.
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REV. 3
Exceeding VNE
Should the VNE be exceeded, reduce airspeed slowly and continue flying using gentle control deflections. Land safely as soon as possible and have the aircraft verified for airworthiness by
authorised service personnel.
Parachute rescue system
Upon pulling the rescue system handle, the whole electrical system, including the propulsion
system of the aircraft is disengaged immediately. See next page for further instructions.
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Emergency procedures
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Parachute rescue system
System description
Depending on the canopy size, the main canopy system is open and fully inflated above the aircraft
between 1.5 - 6.0 seconds after being fired with regard to the flight speed. This means that a rescue
can be successful from as little as 30 m to 150m above the ground, depending on the installation,
position of the aircraft, its speed and trajectory. The necessary height needed for a rescue is calculated from measured figures in horizontal flight up to the stated VNE of aircraft in its MTOW. These
figures are stated in the technical parameters of the system. It is possible to aim the rocket in any
direction but, the best direction is vertical to the lengthwise axis of the plane in an upward or slightly
oblique aft direction. The rocket system has been designed with sufficient power reserve so that it
can pull out the chute even under extreme conditions ranging in temperatures from -40°C up to
+60°C.
WARNING! ACTIVATION HANDLE SAFETY PIN SHOULD BE INSERTED WHEN THE
AIRCRAFT IS PARKED OR HANGARED TO PREVENT ACCIDENTAL DEPLOYMENT.
HOWEVER, AS SOON AS THE PILOT BOARDS THE AIRCRAFT, SAFETY PIN MUST BE REMOVED!
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Use of parachute rescue system
In situations such as:
•
structural failure
•
mid-air collision
•
loss of control over aircraft
•
motor failure over hostile terrain
•
pilot incapacitation (incl. heart attack, stroke, temp. blindness, disorientation...)
the parachute SHOULD be deployed.
Prior to firing the system:
•
shut down the motor and set master switch to OFF (key in full left position)
•
fasten safety harnesses tightly
•
protect your face and body.
To deploy the parachute jerk the activation handle (located above and between pilots) hard for a length of at least 30 cm towards the instrument panel.
Once you have pulled the handle and the rocket is deployed, it will be less than two seconds before
you feel the impact produced by two forces. The first force is produced by stretching of all the system. The force follows after the inflation of the canopy from opening impact and it will seem to you
that the aircraft is pulled backwards briefly. The airspeed is reduced instantly and the aircraft now
starts to descend to the ground underneath the parachute.
As a pilot you should know that the phase following parachute deployment may be a great un-
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Emergency procedures
known and a great adventure for the crew. You will be getting into situation for the first time, where
a proper landing and the determination of the landing site are out of your control.
CAUTION! SHOULD YOU END UP IN POWER LINES CARRYING ELECTRICAL CURRENT, DO
NOT UNDER ANY CIRCUMSTANCES TOUCH ANY METAL PARTS INSIDE OR OUTSIDE THE COCK
PIT. THIS ALSO APPLIES TO ANYONE ATTEMPTING TO HELP OR RESCUE YOU. BE AWARE THAT
ANYONE TOUCHING A METAL PART WHILE STANDING ON THE GROUND WILL PROBABLY SUF
FER MAYOR INJURY OR DIE OF ELECTROCUTION. THEREFORE, YOU ARE STRONGLY ENCOUR
AGED TO CONFINE YOUR MOVEMENTS UNTIL QUALIFIED PERSONAL ARRIVE AT THE SITE TO
ASSIST YOU.
After the parachute rescue system has been used or if you suspect any possible damage to the system, do not hesitate and immediately contact the manufacturer!
Handling and maintenance of Parachute rescue system
Prior to every flight all visible parts of the system must be checked for proper condition. Special attention should be paid to corrosion on the activation handle inside the cockpit. Also, main fastening
straps on the inside of the fuselage must remain undamaged at all times.
Furthermore, neither the system, nor any of its parts should be exposed to moisture, vibration and
UV radiation for long periods of time to ensure proper system operation and life.
TAURUS ELECTRO
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REV. 3
CAUTION! IT IS STRONGLY RECOMMENCED TO THOROUGHLY INSPECT AND GREASE THE
ACTIVATION HANDLE, PREFERABLY USING SILICON OIL SPRAY, EVERY 50 FLIGHT HOURS.
All major repairs and damage repairs MUST be done by the
manufacturer or authorised service personnel.
For all details concerning the GRS rescue system, please see the “GRS - Galaxy Rescue System Manual
for Assembly and Use”.
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Emergency procedures
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Normal procedures
Introduction
Assembling and
disassembling the
aircraft
TAURUS ELECTRO
Normal procedures
29
REV. 3
Daily check-up
Preflight check-up
Normal procedures and
recommended speeds
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30
Normal procedures
REV. 3
Introduction
Assembling and disassembling the aircraft
Assembling the wings
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This chapter provides information on everything needed to fly Taurus Electro safely.
CAUTION! PRIOR TO EACH ASSEMBLING OR DISASSEMBLING ACTION THE TAURUS Electro
SHOULD NOT BE PLACED UNDER STRONG SUNSHINE, AS COMPOSITE PARTS EXPAND AND
CONTRACT AND YOU MAY NOT BE ABLE TO ASSEMBLE OR DISASSEMBLE THE AIRFRAME. UNDER
NO CIRCUMSTANCES ATTEMPT TO ASSEMBLE OR DISASSEMBLE ANY PARTS OF THE AIRCRAFT
FORCEFULLY!
Three people (or two with a stand) are needed
to assemble the wings to the fuselage.
First block all three wheels for the fuselage to
stay in position.
Clean and grease the main wing pins and insertion openings. Open the canopy. Inside the
cockpit set the flap handle to neutral position
and unlock the spoilers’ handle. Make sure
you have all bolts, nuts, washers and spanners
needed within reach of a hand.
Lift one wing-half (one person at each end)
and bring it closer to the fuselage. While the
two are holding the wing-half high up, the
third person directs their movement to put the
wing’s main spar into the opening on the adjacent side of the fuselage.
Now push the wing-half into its final position
slowly. The person closest to the fuselage must
make sure the spoiler and flap connectors have
fitted into adequate fuselage fittings properly. At the same time, the person holding the
wingtip must start with slight circular movements (1cm each direction) in order to assure a
tight fit of the wing and its adequate bushings.
position but still being held at wingtips. The
person not holding the wings must now insert
both pre-greased spar pins. First insert the pin
on the right-hand side of the cockpit because
of easier insertion (thinner spar in front), then
the pin on the left-hand side of the cockpit.
If necessary, the two at the wingtips can assist
by rocking the wings a couple of millimeters
up and down.
Only when both spar pins have been inserted
and secured, wingtips may be released.
Now check all control deflections as well as
flap and spoilers’ extensions for smooth, unobstructed movement.
Insert all bolts and pins and secure them with
self-locking nuts. Do not forget to put aluminium washers underneath the nuts!
Connect all electrical cables and hoses to their
correct fittings.
Finally tape the gap between the fuselage and
the wing using self-adhesive tape.
As this is done the person at the wingtip must
remain in position holding the wing, whereas
the other two move over to the other winghalf, lift it and bring it closer to the fuselage.
Do not forget to make sure the spoiler and flap
connectors have fitted into adequate fittings
properly on this wing-half as well.
Both wing-halfs should now be in their final
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Disassembling the wings
TAURUS ELECTRO
Normal procedures
31
REV. 3
Three people again are needed to disassemble
the wings.
First block all three wheels for the fuselage to
stay in position.
Disassemble the horizontal tail surfaces, disconnect all eventual electrical cables, then unscrew and remove both pin bolts.
WARNING!Do not remove spar pins yet!
Two people must now lift the wingtips (one
wingtip each) and the person in the cockpit remove the main spar pins, one by one,
smoothly.
Forcing pins out of their position may result
in structural damage, therefore the wingtip
holders must hold the wing-halfs precisely at
certain height!
Using slight circular movement at the wingtip,
the wing-halfs must now be pulled out of the
fuselage slowly. On pulling, each wing-half
must be held by two, one at the wingtip and
one near the spar.
As the wing-halfs have been pulled out, place
them onto a soft surface to prevent their
damage.
Schematic of wing (dis)assembly
TAURUS ELECTRO
32
Normal procedures
REV. 3
Fitting the horizontal tail surfaces
Detaching the horizontal tail surfaces
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Horizontal stabilizer and elevator MUST be united during the following procedure. To fit the horizontal tail surfaces first set the trim handle inside the cockpit to full forward position. Make sure the pins,
their holes and bushings have been cleaned and greased!
Lift the joint stabilizer and elevator and slide them into position by pushing them backwards. Now
use the enclosed “T” key to push the security screw down while spinning it clockwise until the screw
is completely tightened. Pull the “T” key out and make sure the safety pin holds the head of the
screw, so that eventual unscrewing will not occur.
At the end tape the gap between horizontal and vertical tail surfaces and cover the hole on top of
the vertical stabilizer with a sticker. Check control deflections for smooth, unobstructed movement.
Set the trim handle to full forward position and remove the safety sticker covering the hole on top of
the horizontal stabilizer and the tape covering the gab between horizontal and vertical tail surfaces.
Now use the enclosed “T” key to push the safety pin screw down while spinning it counter-clockwise
until it is completely loose. To detach the horizontal tail unit push it forward using firm palm strokes
until the unit pops out.
When detached, always place the horizontal tail unit onto a soft surface to prevent damage.
Schematic of horizontal tail surfaces (dis)assembly
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Attaching the rudder
Bring the rudder close to fuselage and fit it first onto the top and then to the bottom hinge.
The rudder must then be fully deflected to one side to provide access to the rudder bolts. Use a selfsecuring, pre-glued M6 nut together with a washer and gently screw them onto the bolt using size
10 spanner. To reach the other rudder bolt deflect the rudder to the opposite direction and repeat
the up-stated procedure.
With both nuts tightened check full rudder deflections for smooth, unobstructed movement.
Detaching the rudder
Deflect the rudder to one side fully and unscrew the nut of the bolt with which the rudder is attached to the bottom hinge. This is the bolt located in-between the central bolt (axis of rotation) and
the bolt holding the metal ropes. DO NOT touch these two bolts - unscrew the nut of the middle bolt
ONLY. Now deflect the rudder to the opposite direction and repeat the up-stated procedure.
TAURUS ELECTRO
Normal procedures
33
REV. 3
After both bolts have been unscrewed, lift the rudder and detach it first from the bottom, then from
the top hinge.
Schematic of rudder (dis)assembly
TAURUS ELECTRO
34
Normal procedures
REV. 3
Daily check-up
Preflight check-up
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The daily check-up matches the preflight check-up.
WARNING! EVERY SINGLE CHECKUP MENTIONED IN THIS CHAPTER MUST BE PER
FORMED PRIOR TO EVERY FLIGHT, REGARDLESS OF WHEN THE PREVIOUS FLIGHT TOOK PLACE!
THE PERSON RESPONSIBLE FOR THE PREFLIGHT CHECKUP IS THE PILOT FROM
WHOM IT IS REQUIRED TO PERFORM THE CHECKUP IN THE UTMOST THOROUGH
AND PRECISE MANNER.
PROVIDED THE STATUS OF ANY OF THE PARTS AND/OR OPERATIONS DOES NOT COMPLY WITH
CONDITIONS STATED IN THIS CHAPTER, THE DAMAGE MUST BE REPAIRED PRIOR TO MOTOR
STARTUP. DISOBEYING THIS INSTRUCTIONS MAY RESULT IN SERIOUS FURTHER DAMAGE TO
THE PLANE AND CREW, INCLUDING INJURY AND LOSS OF LIFE!
20
Schematic of preflight check-up
3
2
1
22
17
16
14
19
21
18
15
13
11
10
4
5
9
12
6
7
8
1 Glass canopy8 Right wing - trailing edge15 Hor. tail surfaces (left)
2 LH flank9 Right airbrake16 Fuselage, continued (left)
3 Nose tip10 Motor, propeller (RH side)17 Motor, propeller (LH side)
4 RH flank11 Fuselage, continued (right)18 Left spoiler
5 Undercarriage, RH wheel12 Hor. tail surfaces (right)19 Left wing - trailing edge
6 Right wing - leading edge13 Vert. tail surfaces (right)20 Left wingtip
7 Right wingtip14 Vert. tail surfaces (left)21 Left wing - leading edge
22 Undercarriage, LH wheel
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TAURUS ELECTRO
Normal procedures
35
REV. 3
Plexy canopy
Surface condition: clear, no cracks, no wavy patterns, impact spots
Attachment fork: perfect closure, no deformations
De-fogging frame holes: clear for adequate airflow
Locking levers: check for correct and smooth operation, locking pin and bushing clean and greased
Water ballast reservoir: inserted and filled-up as required
LH flank
Surface condition: clear, no cracks, no wavy patterns, impact spots
Fuselage - canopy frame joint: equal spacing, perfect closure
Nose tip
Pitot tube: firmly attached, no mechanical damage or bending. Remove protection cover and make
sure it is not blocked or full of water.
Ventilation ring: firmly attached
Surface condition: clear, no cracks, no wavy patterns, impact spots
Fuselage - canopy frame joint: equal spacing, perfect closure
5
Undercarriage, wheels
Bolts: fastened
Wheel: no mechanical damage (e.g. cracks), clean
Wheel axis and nut: fastened
Oil line (hydraulic brakes): no mechanical damage and/or leakage
Tyre: no cracks, adequate pressure
Wheel fairing: undamaged, firmly attached, clean (e.g. no mud or grass on the inside)
Wheel-bay doors: undamaged, check rubber-rope tension
Retraction mechanism: no visible abnormalities, adequate grease on sliding parts, clean of larger
particles e.g. soil, dirt.
Gear bay: free of larger particles, soil, dirt etc.
Under-belly drain holes: make sure they are not blocked and clean accordingly.
Wings’ leading edge
Surface condition: pristine, no cracks, impact spots, no paint and/or edge separations
Wing drain holes: make sure they are not blocked and clean accordingly.
6
22
21
7
Wingtip
Surface condition: pristine, no cracks, impact spots or bumps, no paint separations
20
TAURUS ELECTRO
36
Normal procedures
REV. 3
Wings’ trailing edge
Airbrakes
Motor, propeller, rescue parachute hood
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8
19
Surface condition: pristine, no cracks, impact spots, no paint and/or edge separations
Sealing tape between wing and aileron: undamaged and in position
Aileron: pristine surface, no cracks and/or impact spots, no paint abnormalities and edge separa-
tions, no vertical or horizontal free play, smooth and unobstructed deflections
9
18
Airbrake: firm, smooth, equal and unobstructed extension, tightly fitted when retracted, springs stiff
and intact.
10
17
Check for smooth propeller rotation, check for motor axle free play. No free play is permitted.
Check for any water or condensation inside the motor compartment, remove it accordingly.
Check battery boxes, connectors (all connected firmly) and exposed wiring.
Check the battery boxes behind the cockpit as well.
Propeller must be clean and undamaged.
Parachute rescue system cover: intact and firmly in place. No deformations whatsoever.
11
12
14
16
15
Fuselage, continued
Under-belly drain holes: make sure they are not blocked and clean accordingly
Vertical fin bottom part: no cracks, impact spots or paint separations along main chord
Surface condition: pristine, no cracks, impact spots or bumps, no paint and/or edge separations
Horizontal tail surfaces
Surface condition: pristine, no cracks, impact spots or bumps, no paint and/or edge separations
Hinges: no free play in any direction
Central securing screw on top or the horizontal stabilizer: fastened and secured
Self-adhesive tape covering the gap between horizontal and vertical tail surfaces: in position
Elevator: smooth and unobstructed up-down movement, no side-to-side free play
Vertical tail surfaces
Vertical fin bottom part: no cracks, impact spots or paint separations along main chord
Surface condition: pristine, no cracks, impact spots or bumps, no paint separations
Hinges: no free play in any direction
Rudder metal rope endings: intact, bolts in position
13
Tail wheel
Shock absorbing rubber: no cracks, firm and clean, check for no deformations
Tire: no cracks, adequate pressure
Wheel fork, fork base and bolt: nut tightened, no abnormalities, bearing in position, bolt attached,
straight and fastened
Lift the tail high enough so that the tail wheel is not touching the ground and make sure the
wheel side-to-side deflections are smooth and unobstructed
CAUTION! Preflight check-up should be performed following stations 1 through 22!
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In-cockpit preflight check-up
Instrument panel and instruments: checked, Fuses: pushed in position
Master switch OFF (key in full left position): no control lights and/or electronic instrument activity
Master switch ON (key in full right position): control lights and electronic instrument active
Make sure you have set all instruments to correct initial setting.
Water ballast reservoir (front-cabin): check for water quantity and make sure it is appropriate for
your planned flight. Remove or ad water as necessary to keep the c.g. within limits.
WARNING! CHECK THE WATER BALANCE RESERVOIR IN FRONTCABIN AND VERIFY
CREW’S WEIGHT BEFORE EVERY FLIGHT AS IT MAY INFLUENCE THE CENTRE OF GRAVITY OF
AIRCRAFT TO THE POINT WHERE IT IS NO LONGER CONTROLLABLE!
Main wing spars and connectors: no visible abnormalities of metal parts, spars, pins and bolts; all
bolts and nuts in position and tightened
Electrical cables: correctly connected and in position
Seat belts: undamaged, verify unobstructed harness opening; fastening points intact
Glass canopy: perfect closing at all points, smooth opening, hinges firmly attached; glass immacu-
lately clean with no cracks.
Flap handle: button spring firm, locking mechanism working properly, smooth movement along full
deflections, no free play or visible damage.
Spoilers (Airbrakes) handle: full forward and locked
Ventilation lever: as required
Radio wiring: test the switches, check connectors and headset, perform radio check
Battery: firmly in position, fittings clean with wires connected
Cockpit mirror: in position and adjusted
Emergency parachute release handle: safety pin removed. Make sure unobstructed access is
provided.
TAURUS ELECTRO
Normal procedures
37
REV. 3
Adjust the rudder pedals according to your required legroom. Sit inside the cockpit and release the
pressure o the pedals. Pull the black knob in front of the control stick to bring the pedals closer to
you. To move the pedals further away, rst release the pressure of the pedals, then pull on the knob
slightly (this will release the lock in the mechanism). Now push the pedals forward using with your
feet, while keeping the black adjustment knob in your hand.
TAURUS ELECTRO
38
Normal procedures
REV. 3
Normal procedures
and recommended speeds
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To enter the cabin first unlock the canopy frame and lift the glass canopy all the way by lifting the
lock levers or lifting pads on each side of the cabin. Sit onto the cabin’s edge and support your body
by placing hands onto this same cabin edge and middle cockpit console. Position yourself into the
seat lifting first the inner and then the outer leg over the control stick. Immediately after having sat
into the seat, check rudder pedals’ position to suit your size and needs. Bring the pedals closer or further away by pulling the handle behind the control stick and slide them to the desired position.
To lower the canopy gently hold and pull the metal levers on the side of the cockpit. To lock the
canopy once closed, push the levers forward so that they become parallel to the surface of the glass
frame. Verify that the canopy is closed by applying upward-pressure to the canopy.
Fasten the safety harnesses according to your size.
WARNING! THE SAFETY HARNESS MUST HOLD YOU IN YOUR SEAT SECURELY. THIS IS ES
PECIALLY IMPORTANT WHEN FLYING IN ROUGH AIR, AS OTHERWISE YOU MAY BUMP INTO THE
CANOPY OVERHEAD.
Motor start-up
Before motor start-up
CAUTION! TO ENSURE PROPER AND SAFE USE OF AIRCRAFT IT IS ESSENTIAL FOR ONE TO
FAMILIARISE WITH MOTOR’S LIMITATIONS AND MOTOR MANUFACTURER’S SAFETY WARN
INGS. BEFORE MOTOR STARTUP MAKE SURE THE AREA AROUND THE PROPELLER IS CLEAR.
YOU CAN ALSO CHECK THIS IN THE INSTRUMENT PANEL MIRROR. IT IS RECOMMENDED TO
STARTUP THE MOTOR WITH AIRCRAFT’S NOSE POINTING INTO THE WIND.
Make sure the battery charge status will suffice for the planned flight duration.
Make sure the pitot tube is not covered and rescue parachute safety pin removed.
Engage wheel brakes. Hold the control stick in full aft position always when on the ground.
CAUTION! SHOULD YOU NOT BE HOLDING THE CONTROL STICK IN FULL AFT POSITION,
YOU MAY TIP THE NOSE OF THE AIRCRAFT AS THE CENTRE OF PROPULSION IS HIGH ABOVE
THE FUSELAGE.
Motor start
Make sure the master switch is in ON position (key full right).
Extend the propulsion unit (master-on-board-computer: right switch to UP position).
After the propulsion unit is extended (indication green), set system enable ON (left switch ON).
The motor is now engaged and the propeller should be stationary in its vertical position. Verify this
in the mirror.
CAUTION! THE RPM KNOB IS SENSITIVE, BE CAREFUL WHEN ROTATING IT.
Motor warm-up procedure
The motor does not require any warm-up procedure.
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Taxi
Taxing technique does not differ from other taildragger aircraft. Prior to taxiing it is essential to
check wheel brakes for proper braking action.
CAUTION! TAXI AT MOST 10KM/H / 5 KTS, AS THERE ARE NO DIFFERENTIAL BRAKES AVAIL
ABLE. STEERING IS PROVIDED BY A STEERABLE TAIL WHEEL THROUGH RUDDER INPUT.
Holding point
Make sure the temperatures, particularly battery system temperature is within operational limits.
Make sure the safety harnesses are fastened and canopy closed and secured at both sides.
Set flaps to T position. Power idle.
CAUTION! SHOULD THE MOTOR START TO OVERHEAT BECAUSE OF LONG TAXI AND HOLD
ING, SHUT DOWN THE MOTOR AND WAIT FOR THE MOTOR TEMPERATURES DROP TO REASON
ABLE VALUES. IF POSSIBLE, POINT THE AIRCRAFT’S NOSE TOWARDS THE WIND. THIS WILL PRO
VIDE COOLING MEANS WITH AIRFLOW TO COOL DOWN THE MOTOR FASTER.
TAURUS ELECTRO
Normal procedures
39
REV. 3
Take-off and initial climb
Before lining-up verify the following:
Spoilers: retracted and secured
Battery charge status and health: sufficient and OK
Safety belts: fastened
Cabin: closed securely
Trim handle: in neutral position or slightly backward
Flap handle: T position
Runway: clear
Now pull the stick to full aft position, line up and add full power.
Verify motor for sufficient RPM at full power.
CAUTION! KEEP ADDING POWER GRADUALLY.
WARNING! SHOULD MOTOR RPM NOT REACH SUFFICIENT RPM WHEN AT FULL THROT
TLE, ABORT TAKEOFF IMMEDIATELY, COME TO A STANDSTILL AND VERIFY THE PROPULSION
UNIT.
Start the takeoff roll pulling the elevator full aft, then slowly ease on the stick the lift the tail wheel of
the ground as you accelerate. Reaching Vr (between 70 -75 km/h; 38-42 kts), pull on the stick to get
the aircraft airborne.
CAUTION! CROSSWIND MAX 28 KM/H 15 KTS TAKEOFF SHOULD BE PERFORMED WITH
AILERONS DEFLECTED OPPOSITE THE DIRECTION OF THE WIND. SPECIAL ATTENTION SHOULD
BE PAID TO MAINTAINING RUNWAY HEADING AND NOT LOWERING THE WINGTIP TOO MUCH!
TAURUS ELECTRO
40
REV. 3
Normal procedures
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Climb
When airborne, accelerate at full power. As you reach 90 km/h (52kts) at a height above 50 meters
(165 ft), retract flaps to neutral position. and retract the landing gear. Reduce power to 30 kW.
WARNING! ALWAYS MOVE THE LANDING GEAR COCKPIT HANDLE STRONGLY, WITHOUT
HESITATION AND WITH ONE SINGLE CONTINUOUS MOVEMENT TOWARDS THE DESIRED
POSITION.
Adjust the trim to neutralise the stick force if necessary.
Remember to keep the temperatures and RPM within operational limits during this manoeuvre.
WARNING! FULL POWER CAN BE UTILIZED FOR A MAXIMUM 1 MINUTE. AFTER THIS, RE
DUCE POWER TO 30 KW AND VERIFY THIS WITH ESYSMAN.
Level flight
Taurus Electro is not designed to be a cruising aircraft, however you may be able to maintain level
cruise flight should this be required. To cover distances, saw-tooth flight with interchanging climbs
and glides are an established common practice. When saw-toothing, plan your flight well and always
restart the motor over a landable terrain.
Flights in rough atmosphere
Should you experience turbulence, reduce airspeed and continue flying with flaps set to neutral
position.
CAUTION! IN ROUGH AIR EXTEND AIRBRAKES UNPOWERED FLIGHT FOR SHORT TIME IF
NECESSARY TO KEEP AIRSPEED BELOW VRA.
Descent and final approach
Landing the Taurus Electro with the motor up should be strongly avoided due stress on the propeller mast. It will decrease the life-time of critical component as well. Therefore it is recommended
that you conduct the approach and landing like a glider - with the propulsion unit in its retracted
(DOWN) position.
On downwind (150-200 m, 500-700 ft), maintain a speed of 100 km/h (55 kts) and lower and secure
the landing gear. Before turning base, set the flaps to T stage, and reduce your speed to 90-95 km/h
(48-51 kts). Set trim to neutralise stick force if necessary.
CAUTION! WHEN DESCENDING, MAKE SURE THE PROPULSION UNIT IS RETRACTED.
CAUTION! WITH FLAPS IN L POSITION ONLY HALF WAY AILERON DEFLECTIONS ARE
PERMITTED.
On final, set flaps to L position only if the runway is very short and a steep angle of arrival is
required. Align with the runway and extend airbrakes while maintaining an airspeed of 90-95 km/h
(48-51 kts). Use airbrakes to control your approach glide path.
CAUTION! CROSSWIND LANDINGS REQUIRE HIGHER FINAL APPROACH SPEEDS TO ENSURE
AIRCRAFT’S SAFE MANOEUVRABILITY.
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Roundout and touchdown
CAUTION!See chapter “Performance” for landing performance.
Final roundout (flare) and touchdown should be performed at following airspeeds:
Calm air, aircraft at MTOM75 km/h (40 kts) IAS
Rough air, aircraft at MTOM (incl. strong crosswinds up to 28 km/h (15 kts)) 78 km/h (42 kts) IAS
CAUTION!LAND THE AIRCRAFT IN SUCH A MANNER THAT ALL THREE WHEELS TOUCH THE
GROUND AT EXACTLY THE SAME TIME. WHEN TOUCHING DOWN, RUDDER MUST NOT BE DE
FLECTED IN ANY DIRECTION RUDDER PEDALS CENTRED.
When on ground, start braking action holding the control stick in full back position. Steer the aircraft
by using rudder inputs. Provided the runway length is sufficient, come to a complete standstill without engaging the brakes to ensure their long life.
TAURUS ELECTRO
Normal procedures
41
REV. 3
WARNING! AFTER TOUCHDOWN, DO NOT RETRACT SPOILERS IMMEDIATELY, AS THIS
CAUSES SUDDEN LIFT INCREASE AND THE AIRCRAFT MAY BECOME AIRBORNE AGAIN. SHOULD
THIS OCCUR, HOLD THE ELEVATOR STEADY; UNDER NO CIRCUMSTANCES ATTEMPT TO FOL
LOW AIRCRAFT’S MOVEMENT WITH ELEVATOR DEFLECTIONS, SINCE TAURUS ELECTRO TENDS
TO ATTENUATE REBOUNDING BY ITSELF. HOWEVER, IT IS IMPORTANT TO MAINTAIN RUNWAY
HEADING USING THE RUDDER AT ALL TIMES. TO PREVENT THIS, RETRACT SPOILERS ONLY AF
TER THE AIRCRAFT HAS COME TO A COMPLETE STANDSTILL.
WARNING!TOUCH AND GOES ARE NOT POSSIBLE!
Having reached a complete standstill, extend the motor (Motor start-up) and taxi (Taxi) off the runway.
Performing a crosswind landing, the wing-low method should be used. When using the wing-low
method it is necessary to gradually increase the deflection of the rudder and aileron to maintain the
proper amount of drift correction.
WARNING! IF BY CHANCE THE CRAB METHOD OF DRIFT CORRECTION HAS BEEN USED
THROUGHOUT THE FINAL APPROACH AND ROUNDOUT, THE CRAB MUST BE REMOVED THE
INSTANT BEFORE TOUCHDOWN, BY APPLYING RUDDER TO ALIGN THE AIRCRAFT’S LONGITU
DINAL AXIS WITH ITS DIRECTION OF MOVEMENT.
TAURUS ELECTRO
42
Normal procedures
REV. 3
Parking
Retracting & Extending propulsion unit in flight
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Come to a complete standstill by engaging brakes. Set the system enable switch OFF, then master
switch OFF. Unlock airbrakes (handle lifted slightly) and insert parachute rescue system handle’s
safety pin. Open the canopy, unfasten safety belts and exit the cockpit. Close and lock the canopy after you have left the aircraft. When closing the canopy, make sure that the lock-handles are in OPEN
position not to damage the locking pins. Also, block the wheels if parking on a slope.
CAUTION! WHENEVER YOU LEAVE THE AIRCRAFT MAKE SURE THE CANOPY IS CLOSED AND
LOCKED. SHOULD YOU FORGET TO DO THIS THE CANOPY FRAME MAY NOT FIT THE FUSELAGE
FRAME ANY MORE WHEN YOU RETURN, SINCE THE STRETCH COEFFICIENT OF FIBRE GLASS
AND PLEXYGLASS ARE SIGNIFICANTLY DIFFERENT. ALSO, COVER THE CANOPY WITH A FABRIC
COVER, TO PREVENT THE CABIN FROM OVERHEATING PROTECTION FOR INSTRUMENTS AND
SYSTEMS.
This procedure applies only for retracting/extending the propulsion unit as an intentional event, be
aware you may lose up to 100m (300ft) of altitude during this procedure.
If under power, set rpm to minimum (rotate knob left) and select engine DOWN. Reduce speed to 80
km/h (43 kts) and set flaps to 1st stage. Continue decelerating towards 70 km/h (40 kts).
The system will complete the retraction/extension by itself. Once retracted (confirmed by green
LED status light), select System enable OFF. For more details please consult the ESYS-MAN section in
chapter Aircraft and Systems on board in this manual.
To restart the motor in-flight follow the same procedure as for Motor startup (page 38) while maintaining level flight at 80 km/h (43 kts) with flaps in 1st stage.
WARNING! ALWAYS WAIT BEFORE THE SYSTEM CONFIRMED IN FULL EXTENDED OR FULL
RETRACTED POSITION BEFORE OPERATING THE MASTER SWITCH OR THE SYSTEM ENABLE
SWITCH! THE PROPELLER BRAKE IS ELECTRIC AND DOES NOT WORK WITHOUT POWER IN
FLIGHT AND WITH THE SYSTEM IN THE MIDDLE OF RETRACTION, CUTTING THE POWER WILL
RESULT IN PROPELLER DAMAGE!
WARNING! BEFORE YOU ENABLE THE MOTOR, MAKE SURE THE PROPELLER IS IN
THE FULLY EXTENDED AND UPRIGHT POSITION GREEN LIGHT INDICATION!
Should the batteries cool down during unpowered flight, use up to 1000 RPM until the battery temperature recovers to operating range.
CAUTION! DO NOT ADD FULL POWER WHILE THE BATTERIES ARE STILL COLD. KEEP FLYING
AT 80 KM/H 43 KTS WITH FLAPS IN L STAGE AND NOT MORE THAN 1000 RPM TO WARMUP
THE BATTERIES FIRST IF COLDER THAN 5°C.
NOTE: IT IS NOT REQUIRED TO COOL DOWN THE SYSTEM BEFORE RETRACTION.
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Performance
TAURUS ELECTRO
Introduction
Airspeed indicator
calibration
Take-off performance
Performance
43
REV. 3
Climb performance
Cruise
Descent
Landing performance
Maneuver & gust
envelope
Speed polar
Additional technical data
TAURUS ELECTRO
44
Performance
REV. 3
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Introduction
This chapter provides information on aircraft’s airspeed calibration, stall speeds and general performance. All data published was obtained from test flight analysis. Test pilots were instructed to control the plane simulating average pilot’s flying skills.
Airspeed indicator calibration (IAS to CAS)
Pitot tube’s ingenious mounting and construction makes IAS to CAS correction values insignificant.
Therefore pilots should regard IAS to be same as CAS. IAS = CAS.
Stall speeds
Stall speeds at MTOM are as follows:
flaps in negative position; -5° (up):75 km/h (40.5 kts)
flaps in neutral position; 0° (neutral):71 km/h (38.3 kts)
flaps in 1st position; +5° (down):68 km/h (36.7 kts)
flaps in T position; +9° (down):65 km/h (35.0 kts)
flaps in L position: +18° (down):63 km/h (34,0 kts)
Take-off performance
All data published in this section was obtained under following conditions:
aircraft at MTOM (550 kgs)
runway elevation: 100 meters (330 feet)
wind: calm
runway: dry grass runway with low-cut grass, no significant up- or downslope
ICAO standard atmosphere
TaurusElectro
takeoff runway length at MTOM 550 kgs160 m (530 ft)
takeoff runway length (over 15m (50 ft) obstacle) 245 m (800 ft)
Note: in order to meet the data for takeoff runway length over 15 m obstacle maintain Vx
after take-off.
Takeoff runway length may vary depending on the wind, temperature, elevation and wing &
propeller surface condition.
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takeo runway length
elevation (m)
300 985
Effect of elevation
The table below provides data about the effect of elevation on takeoff runway length.
elevation (m)050010001500
atmosph. pressure (hPa)1012954898845
outside temperature (°C)15.011.78.55.2
Takeoff runway length [m (ft)]
Electro160 (530)185 (610)232 (765)275 (910)
WARNING: If the outside temperature is higher than the standard value it is mandatory to
consider the takeoff runway length prolongs as follows: L = 1,10 • (L
Abbreviations are as follows:
Lh = takeoff runway length at present elevation,
Lt = takeoff runway length at sea level at same atmospheric conditions,
L0 = takeoff runway length at 15°C.
+ Lt - L0).
h
TAURUS ELECTRO
Performance
45
REV. 3
The graph below indicates how takeoff runway length changes as altitude increases.
250 820
200 650
150 500
mft
0
200400
650
1300
60080010001200
2000
2600
3200
4000
Effect of the wind
1400
4600
elevation (ft)
Wind (head, cross or downwind - also called tailwind) affects aircraft’s ground speed (GS).
Headwind on takeoff and landing causes the Takeoff and Landing runway length to shorten as the
GS is smaller during these two flight stages. The opposite stands for tailwind on takeoff and landing
as tailwind prolongs Takeoff and Landing runway length significantly.
The data on the next page was obtained through testing and therefore serve as informative values
only.
Headwind shortens Takeoff and Landing runway length by 8 meters (25 feet) with every 5 km/h
(3 kts) of wind increase (e.g. provided there is a 10 km/h (6 kts) headwind on takeoff and landing, dis-
tances will be approximately 16 meters (50 feet) shorter then ones published in the manual).
TAURUS ELECTRO
m
ft
50
1
60
46
Performance
REV. 3
www.pipistrel.si
Tailwind prolongs Takeoff and Landing runway length by 18-20 meters (60-65 feet) with every 5
km/h (3kts) wind increase (e.g. provided there is a 10 km/h (6kts) tailwind on takeoff and landing, distances will be approximately 36-40 meters (120-130 feet) longer then ones published in the manual).
3x
WARNING!TAILWIND AFFECTS TAKEOFF AND LANDING PERFORMANCE BY MORE THAN
TWICE AS MUCH AS HEADWIND DOES.
The table below provides data about the effect of headwind (+) and tailwind (-) on takeoff runway
length.
The graph below shows how takeoff runway length changes when affected by temperature chances.
200 650
150 500
100 330
takeo runway length
50 160
mft
0
5
10
15
outside temperature (°C)
20
25
30
TAURUS ELECTRO
Performance
35
47
REV. 3
Climb performance
TaurusElectro
best climb speed Vy100 km/h (54 kts)
best climb rate at MTOM2.9 m/s (580 fpm)
Effect of elevation
The table below provides data about the effect of elevation on climb rate at best climb speed Vy.
TaurusElectro
0 m (0 ft)3.1 m/s (620 fpm)
500 m (1600 ft)2.9 m/s (580 fpm)
1000 m (3300 ft)2.7 m/s (540 fpm)
1500 m (5000 ft)2.5 m/s (500 fpm)
The graph below indicates how climb rate changes as altitude increases.
4
800
400
2
m/sfpm
0
m
200400600800
650
ft
1300
2000
elevation
2600
100012001400
3300
4000
TAURUS ELECTRO
48
Performance
REV. 3
www.pipistrel.si
Descent
The rate of descent and glide path are adjusted using airbrakes (spoilers).
Typical sink rate, with flaps set to L position and spoilers fully extended, measures
4,5 m/s (900 fpm) at 90 km/h (48 kts) and 6,0 m/sec (1200 fpm) at 100 km/h (62 kts).
TaurusElectro
max. sink rate, spoilers extended, flaps at L and at flap speed limit 5.8 m/sec
(1160 fpm)
Landing performance
PRECISE DATA WILL BE PUBLISHED AFTER DEDICATED TEST FLIGHTS! PRESENT DATA IS
SUBJECT TO CHANGE WITHOUT NOTICE!!!
Landing length will vary depending on the elevation, gross weight, touchdown velocity, wind direction and how aggressive the braking action is. In following conditions: aircraft at MTOM, airport
elevation 100 meters (300 feet), wind calm; the landing length measures 110 meters (330 feet). Should
you be flying solo, the length shortens by another 10 meters (30 feet).
WARNING! RUNWAY PROPORTIONS MUST BE IN EXCESS OF 400 X 30 METERS (1300 X 100
FEET) WITH NO OBSTACLES IN A 4° RANGE OFF RUNWAY HEADING IN ORDER ENSURE SAFE
FLYING ACTIVITY. USE OF SHORTER STRIPS SHOULD BE CONSIDERED A MAJOR EXCEPTION AND
SHOULD ONLY BE ATTEMPTED BY EXPERIENCED PILOTS AND AT OWN RISK.
Crosswind landing limitations
Maximum allowed crosswind speed for landing with flaps in L position as well as take-off with flaps
in T position is 28 km/h (15 kts).
Gliding performance
The glide is defined as unpowered straight and level flight at a speed providing best lift over
drag ratio or minimum sink rate.
Should the motor become inoperative in flight, as a result of either intended or unintended action,
and it cannot be restarted, react as follows:
establish straight and level flight at the speed providing best lift over drag ratio, if you desire
to overcome greatest distance at reach from initial altitude.
establish straight and level flight at speed providing minimum sink rate, if you desire do stay
airborne the longest. This may come in handy in case you are forced to give way to other aircraft or if
you simply need time to determine the most appropriate site to land.
TaurusElectro
minimum sink speed94 km/h (51 kts)
minimum sink rate (prop.unit., gear retracted)0.70 m/s (140 fpm)
minimum sink rate(prop.unit extended.)1.52 m/s (270 fpm)
best lift/drag ratio speed108 km/h (58 kts)
best lift/drag ratio (prop.unit., gear retracted)1:41
best lift/drag ratio (prop.unit extended.)1:25
L/D ratio at 150 km/h (80 kts)1:32
stall speed (flaps retracted)
max. speed of spoiler extension163 km/h (188 kts)
max. speed with flaps in +5° position130 km/h (70 kts)
max. speed with flaps in T position130 km/h (70 kts)
max. speed with flaps in L position110 km/h (59 kts)
manoeuvring velocity Va163 km/h (88 kts)
maximum rough air speed Vb (gusts 15 m/s)163 km/h (88 kts)
max. speed with powerplant extended120 km/h (65 kts)
max. speed in tow (where permitted legally)150 km/h (80 kts)
VNE225 km/h (121 kts)
Vx - best climb-over-distance ratio speed85 km/h (46 kts)
Vy - best climb rate speed 100 km/h (54 kts)
max. climb rate at MTOM3.1 m/s (620 fpm)
minimum sink speed94 km/h (51 kts)
minimum sink rate 0.70 m/s (140 fpm)
max. sink rate with spoilers extended5.8 m/s (1160 fpm)
best glide ratio speed108 km/h (58 kts)
takeoff runway length at MTOM160 m (525 ft)
takeoff runway length at MTOM over 15 m obst.245 m (800 ft)
best glide ratio1:41
glide ratio at 150 km/h1:32
45° left to 45° right - bank to bank time3.5 s
battery capacity (standard configuration)4.75 kWh
battery capacity (optional configuration)7.10 kWh
useful battery capacity (recommended, standard)3.8 kWh
useful battery capacity (recommended, optional)5.7 kWh
max. wing load factors+5.3 G -2.65 G
TAURUS ELECTRO
71 km/h (38.3 kts)
Performance
51
REV. 3
WARNING! Wing and propeller surfaces must be immaculately clean, dry and undamaged at
all times. As all airfoils are laminar any impact spots, bumps and even a dirt (incl. water, snow...)
on the surface may significantly lower flight performance. Stall speed, takeoff and landing runway length, sink rates and energy consumption increase, while climb rates, ceiling, lift-over-drag
ratio and endurance decrease by as much as 30%. Please consult a Pipistrel representative for
high-altitude performance ratings.
TAURUS ELECTRO
52
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Weight and balance
Introduction
Weighing and centre of
gravity calculation for
empty mass
TAURUS ELECTRO
Weight and balance
53
REV. 3
Weight and Balance
report - including:
Useful load distribution
Definitions and
explanations
TAURUS ELECTRO
54
Weight and balance
REV. 3
Introduction
Weighing and c.g. calculation - empty mass
www.pipistrel.si
This section contains the payload range within which the aircraft may be safely operated.
Weighing procedure and procedure for calculating the in-flight c.g. are also provided.
Refer to equipment list for the installed equipment and accessories.
1. Completely assemble the aircraft, in closed space without any wind disturbance, and with:
- gear down
- motor, flaps and airbrakes retracted,
- control surfaces neutral,
- equipment and accessories in accordance with equipment list.
2. Remove all foreign objects, e.g. tools, maps, ...
3. Empty the water ballast tank, remove baggage.
4. Insert scales under main wheels and a scale with support under tail wheel in order to level
the airplane as follows:
- the slope of upper and lower contour of fuselage tailcone in front of fin must be equal, check
with water scale,
- wings level.
5. Read scale readings, subtract eventual tare weight in order to get net weight.
NOTE: IF ACCURATE HIGH RANGE SCALES FOR MAIN WHEELS ARE NOT AVAILABLE, AIR
CRAFT EMPTY MASS MAY BE DETERMINED BY ADDING UP MASSES OF ALL COMPONENTS:
LEFTHAND WING, RIGHTHAND WING, FUSELAGE, HORIZONTAL TAIL.
6. Measure distances »a« and »b« between verticals through axis of main wheels, tail wheel
and datum.
Use plumb line to mark verticals at the floor.
For main wheels and wing leading edges take average of Left-hand and Right-hand verticals.
NOTE: DISTANCES A AND B MAY CHANGE WITH AIRCRAFT WEIGHT DUE TO DEFLEC
TION OF LANDING GEAR THEY MUST BE MEASURED AT EACH WEIGHING.
7. Calculate c.g. of empty mass as follows:
G
empty
G
2
X
CG.empty
a
b
Datum
X
CG.empty
[kg]Empty mass (with equipment and accessories in accordance with equipment
list, but without occupant(s), baggage and water ballast).
[kg]Load on tailwheel.
[mm] Location of empty mass c.g., positive aft of datum.
[mm] Distance between main wheel axis and datum, positive for main wheel forward
of datum.
[mm] Distance between main and tail wheel axis, always positive.
Leading edge of wing root section..
= (G2.b) / G
empty
- a
www.pipistrel.si
NOTE: WEIGHING AND C.G. CALCULATION OF FLIGHT MASS CAN BE DONE AS ABOVE, BUT
WITH THE FOLLOWING REMARKS:
FLIGHT MASS INCLUDES EMPTY MASS, OCCUPANTS, BAGGAGE AND WATER BALLAST.
RUDDER PEDALS AND SEATING POSITION MUST BE ADJUSTED AS IN FLIGHT.
However, flight mass and c.g. are normally calculated as shown in “Flight mass and c.g.”.
Weight and balance report
(including: Useful load distribution)
Fill-in Weight and Balance report on the next page.
“Empty mass c.g. limits” diagram is used to find out maximum and minimum cockpit load with
respect to mass and centre of gravity of empty aircraft.
TAURUS ELECTRO
Weight and balance
55
REV. 3
Each weighing and centre of gravity calculation has to be entered in the »Weight and Balance«.
If minimum and maximum cockpit load change with respect to last weighing, cockpit placard must
be changed or corrected as well.
After installation or removal of equipment or accessories, repair, painting, or any change which
affects weight and balance, a new Weight and Balance (weighed or calculated, whatever is more appropriate) must be accomplished.
TAURUS ELECTRO
56
Weight and balance
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10
Weight and Balance - Taurus ELECTRO
Ajdovščina
Pipistrel d.o.o.
Weighing and C.G. calculation - empty mass
1
date of weighing/
2
acomplished by/
3
date of "Equipment list"/
4
main wheel Lh G
5
main wheel Rh G
6
main wheel total G
7
tail wheel G
8
distance amm222423
9
distance bmm440244064400
empty mass =(6+7) G
1 Lh
1 Rh
1
2
empty
1. example 2. example3. example
kg123,0123,4122,0
kg124,4124,8123,5
kg247,4248,2245,5
kg49,648,847,5
kg297,0297,0293,0
www.pipistrel.si
Serial NumberRegistration
11
empty mass C.G. X
max cockpit load
12
(from "Empty mass c.g. lim its" diagram)
X
a
Empty mass is with equipment and accesories per equipment list, and without occupants, fuel, baggage and water ballast.
X
CG.empty
= (G2.b)/G
CG.empty
without w.ballast
cg
empty
- a
mm713700690
kg180,0175,5169,0
Component
mass
Lh wing
incl.flaperon
Rh wing
incl.flaperon
Fuselage -
complete
Horiz. tail
b
Empty mass
kgkgkgkg
Useful load distribution
13
14
max useful load = (13-10)kg252 252 256
max cockpit load
15
(declared, see Notes)
min cockpit load
16
(from "Empty mass c.g. lim its" diagram)
without w.ballast
without w.ballast
kg
kg86,082,078,0
550 550 550 550 550 550 550gkssam xam
252 252 256
Less BaggageLess BaggageLess Baggage
17
Inspector
● Declared max cockpit load without water ballast is: 14 - baggage if 14 is less than, or eq
Notes:
● Water ballast is installed for solo flight with lightweight pilot for not to exceed aft c.g. limit.
Min cockpit load may be reduced for 2,3 kg per each litre of water ballast.
● If water ballast is left in the tank for duo flight, max cockpit load must be reduced for 2,3kg per each litre of water ballast.
● Influence of baggage on aircraft c
● Max mass of single occupant (due to structural load per seat) is 110kg.
signature & stamp
/
12, if 14 is more than 12.
.g. (and corresponding cockpit load) is neglectable.
Empty mass is mass of empty aircraft with equipment and accessories in accordance with equipment list. Refer to Weight and Balance report for actual value.
Empty mass c.g. limits diagram provides empty mass c.g. limits within which flight mass c.g. is kept
in limits. Or differently, the diagram is used to find out cockpit load with respect to mass and c.g. of
empty aircraft.
lines of constant
0
max cockpit load
0
- front CG limits
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Minimum cockpit load is obtained as follows:
1. Locate c.g. of empty mass X
through it.
2. Locate empty mass G0 [kg] at the bottom horizontal axis and draw a vertical line through it.
3. The intersection of two lines drawn determines minimum cockpit load. Interpolate between lines
of constant minimum cockpit load (RED - 65, 70, 75 kg, ...), if necessary.
NOTE: MIN. COCKPIT LOAD MAY BE REDUCED FOR 2.3 KG PER EACH LITRE OF W. BALLAST.
200
190
180
170
160
150
140
CG of empty mass -
distance aft of datum in mm .
[mm] at the Left-hand vertical axis and draw a horizontal line
CG.empty
Empty mass c.g. limits
Cockpit load in kg with respect to
mass and c.g. of empty aircraft
empty mass kg
TAURUS ELECTRO
Weight and balance
lines of constant
min cockpit load
- aft CG limits
57
REV. 3
9
9
8
8
7
7
6
6
5
TAURUS ELECTRO
58
REV. 3
Weight and balance
Maximum mass (MTOM or MTOW)
www.pipistrel.si
Maximum cockpit load is obtained as follows:
1. Intersection point from the previous step 3. determines maximum cockpit load with respect to
maximum permitted front c.g. of aircraft. Interpolate between lines of constant maximum cockpit
load (BLUE - 140, 150, 160 kg, ...), if necessary.
NOTES:
IF WATER BALLAST IS LEFT IN TANK FOR DUO FLIGHT, MAXIMUM COCKPIT LOAD MUST BE
REDUCED FOR 2.3 KG PER EACH LITRE OF WATER BALLAST.
MAXIMUM COCKPIT LOAD WITH RESPECT TO AIRCRAFT MAXIMUM MASS IS OBTAINED BY
SUBTRACTING EMPTY MASS, BAGGAGE AND WATER BALLAST FROM MAXIMUM MASS. DECLARED
MAXIMUM COCKPIT LOAD IS THE LOWEST OF TWO VALUES
Maximum mass = 550 kg for aircraft with parachute rescue system.
Useful load distribution
Useful load items are cockpit load, baggage, water ballast.
Cockpit load = occupants (pilot + passenger).
The sum of useful load items must not exceed max useful load.
Max useful load = max.mass - empty mass.
Aircraft flight mass and c.g. depend on quantity and distribution of useful load. Quantity and
distribution of useful load items are explained below. However, the influence of useful load items is
briefly expressed in the condition that, if for a given empty mass and c.g. the max useful, max and
min cockpit load from Weight and Balance or cockpit placard are respected, aircraft max mass and
in-flight c.g. will also be kept within limits. Refer to Weight and Balance or cockpit placard for actual
value of max useful load and its distribution.
Cockpit load
Refer to »Weight and Balance« or cockpit placard for max and min cockpit load.
Max mass of single occupant (due to structural load per seat) is 110 kg.
Baggage
Max baggage = 10kg.
Baggage quantity depends on useful load, cockpit load and water ballast. The sum of cockpit load,
baggage and water ballast must not exceed max useful load.
Baggage compartment behind the seat is close to aircraft c.g. – the influence on aircraft c.g. is
negligible.
Water ballast
Water ballast in fuselage nose is installed for solo flight with lightweight pilot for not to exceed aft
c.g. limit. For duo flight it is normally removed, because it reduces useful and max cockpit load.
Max water ballast = 9 litre (9kg). Refer to the note of Weight and Balance or cockpit placard for
detailed instruction.
www.pipistrel.si
Weight and balance
Flight mass and c.g.
Flight mass is the sum of empty mass, cockpit load, baggage and water ballast. Flight mass c.g. calculation is done in a table as shown by example below:
- multiply mass by distance from datum (positive for items aft of datum) to get moment [kg.mm] of
each item,
- add up moments of all items,
- add up masses of all items,
- divide the sum of moments [kg.mm] by the sum of masses [kg] to obtain flight mass c.g. [mm].
Reference masses and c.g.’s of different items
TAURUS ELECTRO
59
REV. 3
masses and c.g.’s
of different items
pilot only-550
pilot + passenger-541
water ballastmax9-1800
baggagemax10150
instruments-1140
parachute rescue system550
tail wheel4380
empty mass motor retractedref. value29771377.7 % MAC
empty mass motor extendedref. value29770977.2 % MAC
mass distance from datum,
positive = aft
kgmm
TAURUS ELECTRO
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Aircraft and systems on board
Aircraft and on board systems
Introduction
Cockpit levers
Instrument panel
TAURUS ELECTRO
61
REV. 3
Undercarriage
Seats and safety belts
Pitot-static lining
Air brakes (spoilers)
Flap settings
Power plant, propeller
Energy storage & charging
Electrical system
Cooling system
Wheel brake system
TAURUS ELECTRO
62
Aircraft and systems on board
REV. 3
Introduction
www.pipistrel.si
Taurus is a 15-meter-wingspan, side by side
T-tail motorglider made almost entirely of
composite materials. The wing is mid-mounted
cantilever type, propulsion system is fully retractable to enhance gliding performance
The undercarriage is a taildragger type with
two main, brake equipped wheels, which are
fully retractable. Tail wheel steerable through
rudder input.
Taurus features flaperons, which are interconnected flaps and ailerons presented in the
same deflecting surface. Flaps offer 5 settings:
- 5°, neutral, 1
What is more, individual main flight control
levers make Taurus ideal for initial as well as for
advanced flight training. All aileron, elevator
and flap controls are connected to the cabin
controls using self-fitting push-pull tubes.
Rudder is controlled via cables. The elevator
trim is mechanical, spring type housed internally in the fuselage to prevent drag.
All aircraft ship with H type safety belts attached to the fuselage at three mounting
points. Rudder pedals can be adjusted to suit
your size and needs.
The batteries are in the fuselage, placed in
four metal boxes with dedicated connectors.
Charging must be carried out only with original Pipistrel dedicated chargers.
The motor/controller system Electro 40/30 is
standard and the aircraft features the Master
st
+5,° Takeoff +9°, Landing +18°.
On-board Computer (MOC) that provides
throttle-by-wire capability.
The canopy is either transparent or blue-tinted
plexy-glass.
Main wheel brakes are hydraulically driven disc
type. The hydraulic brake fluid used is DOT 4.
Cabin ventilation is achieved through special
ducts fitted onto the canopy frame and may
be adjusted for crew’s comfort.
To enhance aerodynamics for gliding, Taurus
fully retracts the propulsion unit. This procedure is fully automated by the flip of a switch
on the instrument panel.
Electric circuit enables the pilot to test individual circuit items. Navigational (NAV), and
anti collision (strobe) lights are an option. The
motor/propeller compartment is fully enclosed
and separated from the cockpit.
Basic instruments come installed with operational limits pre-designated. EYS-MAN is standard equipment.
A ballistic parachute rescue system can be
installed as an option (in some countries e.g.
Germany the ballistic rescue system must be
installed).
www.pipistrel.si
Composite parts are made of:
fabric:AFK 170, GG90, GG 120, GG160, GG200,
continuous fibres:Tenax STS 5631
foam:75 kg/m3 PVC 3mm, PVC 5 mm, PVC 8mm
honeycomb:kevlar 3mm
GFK:3 mm, 5 mm, 7 mm of thickness
paint:acrylic
heat resistant protectionglass-aluminium sandwich
Metal parts used are:
tubes:materials: Fe0146, Fe 0147, Fe0545, Fe1430, AC 100, CR41 in LN9369
sheet metal:materials: Fe0147 in Al 3571
rods:materials: Fe 1221, Fe 4732, Č4130, Al 6082, CR41 in Al 6362
cable:AISI 316
bolts and nuts:8/8 steel
TAURUS ELECTRO
Aircraft and systems on board
90070, 92110, 92125, 92140, 92145, KHW200
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REV. 3
All composite parts are made of glass, carbon and kevlar fiber manufactured by Interglas GmbH.
All composite parts have been tested at a safety factor of 1.875.
All parts are made in molds, therefore, no shape or structural differences can occur.
All design, manufacturing and testing complies with following regulations:
• Lufttüchtigkeitsforderungen für aerodynamisch gesteuerte Ultraleichtflugzeuge (LTF-UL) vom
30. Januar 2003, herausgegeben vom Luftfarht-Bundesamt
• JAR-1 microlight definition
• JAR-22 - certain sections
• JAR-VLA -certain sections
for Slovenian market also: Pravilnik o ultralahkih napravah Republike Slovenije.
All parts and materials present in Taurus Electro are also being used
in glider and general aviation industry and all comply with aviation standards.
TAURUS ELECTRO
64
Aircraft and systems on board
REV. 3
Cockpit levers
Taurus Electro’s cockpit levers are divided into two groups:
www.pipistrel.si
side window, ventilation
master switch
canopy lift-padcanopy lift-pad
ventilation nozzleventilation nozzle
fuses
airbrakes/wheelbrakes
trim knob
ESYS-MAN (throttle)
rudder pedals (right)rudder pedals (left)
cabin lock levercabin lock lever
12V socket
flap lever
landing gear lever
ventilation knob
pedal adjustment knob
control stick (right)control stick (left)
side window, ventilation
Individual control levers: pilot stick, adjustable rudder pedals
Shared control levers: ESYS-MAN (throttle control), flap lever, gear retraction lever, trim lever, air-
brakes lever, canopy lock levers, ventilation lever and emergency parachute release handle.
Instrument panel
compass
primary flight
instruments
master switch
slip indicator
ventilation/de-fogging
knob
ESYS-MAN (throttle ctrl)
fuses
www.pipistrel.si
Aircraft and systems on board
Taurus Electro comes standard with a modern, electronic instrument panel. The panel utilizes the
power of the ESYS-MAN control and monitoring instrument, which includes throttle control, system
enable, as well as motor retraction management. Besides the conventional instruments the panel includes a magnetic compass, a side-slip indicator, 12 V socket, cockpit ventilation lever, throttle lever,
master switch, fuses, CHT/EGT gauge and primary flight instruments.
Undercarriage
The undercarriage is a taildragger type with two main, brake equipped, retractable wheels and a
rubber cushioned tail wheel. Main gear is retracted / lowered by operating a lever located between
both seats, accessible to both crew. Once the main landing gear is lowered it is locked into position
automatically. Wheel brakes are both engaged simultaneously when the airbrakes are fully extended
and the pilot continues to pull on the airbrake lever.
distance between main wheels:0,68 m
distance between main and tail wheel axis:4,403 m
tire:4,00'' x 6'' (main wh.), 2,50'' x 4'' (tail wh.)
1,5 - 1,6 bar / 21-23 PSI (main wheels),
tire pressure
brakes: disk type, engaged simultaneously upon full airbrake extension
brake fluid:DOT 4
0,6 bar / 9 PSI (tail wheel)
TAURUS ELECTRO
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Main gear lowered and locked
(front view)
Main gear lowered and locked (side view)
Main gear retracted (side view)
All dimensions are in millimeters
TAURUS ELECTRO
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Aircraft and systems on board
Seats and safety belts
Seats have no stiff internal structure and do not offer different settings. All Taurus aircraft ship with H
type safety belt attached to the fuselage at three mounting points.
Pitot-Static lines
The pitot tube is inside the nose-tip. Pitot lines made of plastic materials lead from the nose to the
instrument panel and are secured from non-intentional damage. Static ports are located on both
sides of the nose below the middle line and are marked with red circles. Static lines join the static
ports to the instrument panel, they are made of composite materials and secured.
Air brakes (spoilers)
Spoilers are most commonly used to increase drag and steepen the final approach.
During takeoff, climb and cruise spoilers MUST be retracted and locked (handle in cockpit in full forward position). To unlock and extend spoilers, pull the handle upwards.
www.pipistrel.si
Flap settings
Taurus Electro is equipped with flaperons which offer five (5) different flap settings. Apart from the
limitations for extension of +9° and +18° flaps, there are recommendations for the use of flaps with
different speed-ranges and types of flight operation.
Recommended speed ranges for certain flap settings in when gliding:
flaps in negative position; -5° (up):faster than 150 km/h km/h (80 kts)
flaps in neutral position; 0° (neutral):120 - 150 km/h (65 - 80 kts)
flaps in 1st position; +5° (down):90 - 120 km/h (50 - 65 kts)
flaps in T position; +9° (down):80 - 90 km/h (43 - 50 kts)
flaps in L position: +18° (down):FINAL APPROACH - LANDING
Water ballast reservoir
Taurus Electro is equipped with a water ballast reservoir to provide for better control over the aircraft’s centre of gravity. The reservoir is placed in front-cabin and secured with two (2) fastening butterfly screws. The quantity of the reservoir is 9 litres (9 kg). Lever arm for centre of gravity calculations
is -1800 mm. There are placards on the instrument panel indicating minimum and maximum allowable crew weight with and without (9 kg) water ballast. The mentioned figures are to be respected at
all times!
WARNING! CHECK THE WATER BALANCE RESERVOIR IN FRONTCABIN AND VERIFY
CREW’S WEIGHT BEFORE EVERY FLIGHT AS IT MAY INFLUENCE THE CENTRE OF GRAVITY OF
AIRCRAFT TO THE POINT WHERE IT IS NO LONGER CONTROLLABLE!
www.pipistrel.si
Aircraft and systems on board
Power plant, propeller and energy storage
Taurus Electro has a out-runner motor mounted on top of the motor arm and provides direct-drive
to the propeller. The motor is a 3-phase synchronous motor with permanent magnets, exhibits high
torque and above average efficiency ratings. The cooling is provided via incident air. The power controller is mounted inside the fuselage in an IP54 casing and is aircooled via a dedicated cooling duct.
The system is controlled via the color-display EYSY-MAN cockpit interface instrument. It indicates
the drive mode and important parameters to the pilot and provides the interface for engine retraction and extension. Everything is operated via two (2) toggle switches and a rotatable knob. The
first toggle switch is the system enable (on/off) switch while the second toggle switch is the motor
position selector up/down i.e. extended or retracted. This process is fully automated – the propeller
is positioned and held in place while the motor extends or retracts. The pilot only selects the desired
mode with the toggle switch. The rotary encoder acts as the throttle selector. The ESYS-MAN also
communicates with the Battery-Management-System and delivers information about the state of
charge, battery health information and monitors the charging. All components communicate via the
CAN interface with a proprietary communication protocol.
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Motor:
TEMPERATURE °C / ELECTROMOTORELECTRO 40/30
maximum take-off power (1 min)40 kW
maximum continuous power30 kW
maximum operating temperature100° C
maximum ambient temperature40° C
RPMELECTRO 40/30
maximum allowable2200
take-off rpm (typical)2150
climb rpm (typical)1900
Controller:
POWER CONTROLLERELECTRO 40/30
maximum operating temperature75° C
recommended max continuous temperature45-55° C
WARNING! DO NOT, UNDER ANY CIRCUMSTANCES, ATTEMPT TO USE ANY OTHER
BATTERIES, OTHER THAN PIPISTREL FACTORY ORIGINAL BATTERY SYSTEM, WITH THIS MOTOR/
CONTROLLER.
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Aircraft and systems on board
REV. 3
ESYS-MAN V2
electric system control & monitoring instrument
In order to simplify aircraft handling, the ESYS-MAN system takes complete control over the propulsion unit, including the “throttle” . The system is very light and reliable as all switches and sensors
used to monitor the operations are inductive type and as such not sensitive to vibration, mechanical
damage and/or dirt. ESYS-MAN provides protections to systems and is networked to the power controller, motor arm controller, BMSs and charger via CAN bus.
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System enable switch (ON/OFF) – This is the switch that enables the power to the system. When
set to ON (up), the status of the system will be confirmed with the Status message above the switch.
This is the first switch to be enabled and last to be disabled during the operation of the propulsion
system. Indication via message (ON, OFF).
Position selector (UP/DOWN) – use this switch to extend or retract the motor. The procedure is
fully automated (see next page!). Indication via message (UP, DN, UP-intermittant, DN-intermittant).
Throttle (RPM selector) – rotary knob that acts as the throttle command. Rotate right for
incremental RPM increase and left for incremental RPM decrease. The throttle bar (bluish white)
below the RPM and PWR fields on the display corresponds to current throttle level. Rotating the
knob to the right will overrun the current throttle setting and initiate full power immediately
(regardless of engine temperatures and should only be used in emergency).
Extending the propeller arm:
WARNING! BEFORE EXTENDING THE PROPELLER ARM IN-FLIGHT, SET FLAPS TO T STAGE AND
REDUCE SPEED TO 80 KM/H (45KTS) OR BELOW.
1. Switch the System enable switch ON (pull switch and move up).
This activates the system. Wait for ON indication on left-bottom of ESYS-MAN V2 (typically less
than 5 sec).
2. Switch the Position selector switch to UP (pull switch and move up).
The electric brake will hold the propeller steady when it is moving towards the extended position.
An intermittent UP message is displayed, indication the system in motion. Do not touch the unit
until solid UP is displayed.
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Aircraft and systems on board
Running the motor (continued from Extending the propeller arm):
CAUTION! BEFORE STARTING-UP THE MOTOR, VERIFY THE PROPELLER ARM IS EXTENDED AND
PROPELLER IN VERTICAL POSITION BY CHECKING THE COCKPIT MIRROR.
1. Rotate the throttle knob to select RPM (add power)
When the motor is running, the display will show motor RPM.
Also notice the throttle bar indicator.
Retracting the propeller arm:
WARNING!BEFORE RETRACTING THE PROPELLER ARM IN-FLIGHT, SET FLAPS TO T STAGE
AND REDUCE SPEED TO 80 KM/H (45 KTS). A COOLING PERIOD IS NOT REQUIRED.
1. Reduce RPM to zero (rotate throttle knob left) and monitor the throttle bar.
Monitor the RPM dropping towards zero.
2. Switch the Position selector switch to DOWN (pull switch and move down).
The electric brake will initiate propeller positioning. Once propeller is positioned, the retraction
will continue automatically. An intermittent DN message is displayed, indicating system in motion. Do not touch the unit and wait until the solid DN message is displayed!
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REV. 3
3. Switch the System enable switch to OFF (pull switch and move down).
This deactivates the system.
Shutting-down the motor IN FLIGHT:
WARNING! WHEN IN FLIGHT, SHUTTING DOWN THE SYSTEM IS ONLY PERMITTED WHEN
THE PROPELLER IS IN THE RETRACTED POSITION. ON GROUND, THIS PRECAUTION IS NOT
VALID.
1. Retract the propeller arm
2. Switch the system enable switch to OFF (down)
WARNING! ALWAYS WAIT BEFORE THE SYSTEM IS CONFIRMED IN FULL EXTENDED OR
FULL RETRACTED POSITION BEFORE OPERATING THE MASTER SWITCH OR THE SYSTEM
ENABLE SWITCH! THE PROPELLER BRAKE IS ELECTRIC AND DOES NOT WORK WITHOUT POW
ER. IN FLIGHT AND WITH THE SYSTEM IN THE MIDDLE OF RETRACTION, CUTTING THE POWER
WILL RESULT IN PROPELLER DAMAGE!
Alerts, error messages, info messages
EYS-MAN V2 will give alerts on the screen in form of error message (RED) and info messages (WHITE).
Each message must be confirmed by a click-press of the RPM knob. Possible messages include:
Motor temperature high – Recommended: reduce power (motor is hot)
ESC temperature high – Recommended: reduce power (speed controller is hot)
Batt. temperature high – Recommended: reduce power and retract motor (battery is hot)
Batt. temperature low– Recommended: do not use power in system, danger of battery damage.
Battery low 20% – Recommended: consider retracting the motor soon
Battery empty – Recommended: retract motor immediately or retraction will be automatic
Time-out (after motor retracted) - Recommended: Switch system enable OFF to prevent ESC
overheating, select master switch I (glide mode).
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Aircraft and systems on board
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Energy storage & charging
description:4 metal boxes which include battery cells,
battery capacity:
(standard configuration)
battery capacity:
(optional configuration)
useful bat. capacity (recommended, std)3.8 kWh
useful bat. capacity (recommended, optional)5.7 kWh
CAUTION! IN ORDER TO PROLONG THE BATTERY LIFE, IT IS NOT RECOMMENDED TO
DISCHARGE THE BATTERY BELOW 20% CHARGE. USEFUL RANGE IS CONSIDERED TO BE BETWEEN
20%-100% OF SYSTEM CHARGE.
CAUTION! FOR BATTERY PROTECTION, THE ESYS-MAN WILL CUT THE POWER (AFTER A
WARNING) AT 10% BATTERY CHARGE. THE REMAINING IS USED FOR MOTOR RETRACTION AND
POWER SUPPLY TO AVIONICS.
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BMS and communication modules,
power and signal connectors
4.75 kWh
7.10 kWh
The batteries are organized in 4 metal boxes, which include the battery cells, the Battery
Management System, communication modules as well as power and signal connectors. Two of the
boxes are positioned behind the fuselage bulkhead, two are in front of the same bulkhead.
Make sure that all the connectors (2x power connectors, 2x CAN BUS connector per box) are fastened properly before each flight.
For storage, it is recommended to disconnect the RED (+) power connector on the box behind the
cockpit section. This will physically disconnect the high-voltage part of the propulsion system. Make
sure you reconnect the battery before next flight.
Battery management system
Each of the battery boxes have an independent BMS, monitoring and balancing system voltage. All
units communicate to the ESYS-MAN and log data from each individual battery cell. In case of an
error, ESYS-MAN will display a message (error code). Contact Pipistrel if this happens. Under normal
circumstances the BMS requires no human intervention and is a fully automated system that takes
care of itself.
Battery systemStandard
Maximum voltage285 V
Minimum voltage204 V
Recommended voltage range for storage240 V - 260 V
Maximum operating temperature70° C
Maximum temperature at take-off42° C
Minimum operating temperature5° C
Allowable temperature range for storage10°C - 40° C
CAUTION! TEMPERATURES BELOW 10°C WILL RESULT IN DECREASE OF BATTERY CAPACITY.
PLAN YOUR FLIGHT ACCORDINGLY.
WARNING! DO NOT, UNDER ANY CIRCUMSTANCES, ATTEMPT TO CHARGE THE BATTERIES
WITH ANY THIRD PARTY CHARGERS. ONLY PIPISTREL ORIGINAL EQUIPMENT MUST BE USED.
WARNING! RESPECT OPERATING AND STORAGE TEMPERATURE LIMITS AT ALL TIMES.
FAILURE TO DO SO MAY RESULT IN BATTERY DAMAGE.
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POWER CONNECTOR
(RED +)
CAN BUS CONNECTOR
(NETWORK)
Battery box with connectors
POWER CONNECTOR
(BLUE -)
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Aircraft and systems on board
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WARNING! IF YOU HAVE PURCHASED ANOTHER SET OF BATTERIES, MAKE SURE YOU DO
NOT MIX THE BOXES BETWEEN SETS. THE GROUP OF SAME 4 BOXES MUST ALWAYS BE USED! THE
BOXES COME DESIGNATED WITH COLOR DOTS. USE ONLY THE BOXES WITH SAME COLOR DOTS.
Charging
The charger is a dedicated charger with approximately 1.5 kW charging power. Charge time will vary
upon battery charge status and may be between 30 minutes to up to 7 hours. The charger is a worldwide charger, which can be connected to any 110 V and 240 V, 50 Hz or 60 Hz electrical grid or the
Solar Trailer. Charger is a portable unit, which can be stored in the aeroplane using the optional solid
baggage compartment.
WARNING! BEFORE CONNECTING THE CHARGER, MAKE SURE THE AIRCRAFT ELECTRICAL
SYSTEM IS OFF (MASTER SWITCH - KEY IN OFF POSITION).
Connect the charger into the wall socket, then connect the cable into the adequate cockpit socket.
Switch the rocker switch ON on the RH side of the charger to power-up. A menu is displayed on the
charger screen. Using the buttons of the charger, select FULL CHARGE (charge the battery fully for
flight) or REST CHARGE (charge the battery to a level, optimum for storing the aircraft).
Confirm your selection with the OK button. The charger will engage the charging relay and initiate
charging. During the charge, the charger communicates with the BMS and balances the voltage of
battery cells. When charging and balancing is completed, this is indicated by the display. It is then
safe to disconnect the charger. To do so, switch the rocker switch on the side of the charger to OFF,
then remove cable from cockpit charge socket.
CAUTION! DURING PERIODS OF NOT USING THE AIRCRAFT, IT IS REQUIRED TO PERFORM
A KEEP-ALIVE (STORAGE) CHARGE ONCE EVERY 30 DAYS. TO DO SO, CONNECT THE CHARGER
AND SELECT “REST CHARGE” MODE, THAN WAIT UNTIL COMPLETED. THIS WILL REFRESH THE
BATTERIES AND KEEP THE SYSTEM IN A HEALTHY STATE. ALSO, AFTER A PERIOD OF NO-FLYING
ACTIVITY, PERFORM A FILL-UP CHARGE 24 HOURS BEFORE THE ACTUAL FLIGHT.
CAUTION! AFTER PERFORMING A FULL CHARGE, DO NOT KEEP THE BATTERY AT A VOLTAGE
OVER 260 VOLTS FOR MORE THAN 5 DAYS. EITHER PERFORM A FLIGHT OR RUN THE MOTOR TO
DISCHARGE THE BATTERY TO THE RECOMMENDED 240-260 VOLTS FOR STORAGE.
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Aircraft and systems on board
REV. 3
Electrical system
Cockpit electrical system
power supply:lithium polymer pack, charged by main charger 13.2 V nominal, 10 Ah
master switch:key type, position 1 - Avionics, position 2 - ALL ON
maximum power load
on 12 Socket
NOTE: THE BATTERY FOR AVIONICS IS SEPARATE FROM THE MAIN BATTERY. THE AVIONICS
CAN BE DEPLETED DURING LONG FLIGHTS. BE AWARE THAT LONG FLIGHTS UNDER INTENSIVE
AVIONICS USE (TRANSPONDER, RADIO, GPS, ETC.) WILL DISCHARGE THE BATTERY.
Cooling system
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2.5 A
All propulsion system components are air-cooled. The motor receives the incident stream of air
whereas the power controller has dedicated ducting to deliver air to the heatsink.
Wheel brake system
Wheel brake system features common braking action for both main wheels. Wheel brakes are hydraulically driven disc type.
Wheel brakes are operated by extending the airbrake lever past the full extension point.
Hydraulic brake fluid used for hydraulic type brakes is DOT 4.
If the braking action on your aircraft is poor even while the full backward pressure is applied on the
airbrake handle, please see chapter on Handling and Maintenance of this manual to learn how to
rectify this problem.
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Schematic of complete electrical system
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Aircraft and systems on board
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REV. 3
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Aircraft and systems on board
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This page is intentionally left blank.
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Handling
and maintenance
Introduction
Inspection periods
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Handling and maintenance
75
REV. 3
Repairs and
spare part replacements
Preventative maintenance
Special check-ups
Tie down
Storage
Cleaning
Keeping your aircraft in
perfect shape
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Handling and maintenance
REV. 3
Introduction
This chapter determines handling and (preventative) maintenance terms. Also, recommended
ground handling is presented.
THE FOLLOWING ARE PROVISIONAL VALUES SUBJECT TO CHANGE WITHOUT NOTICE!
Inspection periods
Repairs, spare part replacements and
preventative maintenance
All major repairs and spare part replacements MUST be done by
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authorised service personnel.
However, you are encouraged to take care of preventative maintenance yourself. This includes:
tire and wheel bearings replacements, safety wire replacements, door and safety harness replacement, light bulb replacements, spark plugs replacements and air filter replacements.
The table below indicates recommended maintenance periods (see Service manual for detailed information).
Table legend:
Check-up - visual only, check for free play and whether everything is in position - DO IT YOURSELF
C
Cleaning - DO IT YOURSELF
CL
Lubricating, oiling - lubricate all designated parts and spots using proper lubricant -
LO
DO IT YOURSELF
Replacement - replace designated parts regardless of state and condition.
R
You are encouraged to DO undemanding replacements YOURSELF, otherwise have replacements
done by AUTHORISED SERVICE PERSONNEL
Special check-up - measuring, verifying tolerances and functionality - DONE BY AUTHORISED
SC
SERVICE PERSONNEL ONLY
Overhaul
O
WING AND TAIL SURFACES
surface and structure condition
deflections without free play
bearings - moving parts bushings
lights
self-adhesive sealing tape
horizontal tail mount
drain holes
EACH
daily
first 5
hours
CSC
CSC
CSC
C
CCR
CCSC
CL
50
hours
100
hours
250
hours
500
hours
1.000
hours
SCO
10.000
hours
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Handling and maintenance
77
REV. 3
EACH
FUSELAGE
surface and structure condition
elevator control tube bearing
doors, hinges
rudder control wires and hinges
drainage holes
CABIN
control levers, instr. panel, seats
control levers’ free play
instruments and pitot-static
glass surfaces: clean, attached
rivet condition
safety harnesses and attach. points
parachute rescue sys. activation handle
wing connectors: electrical
bolts and spar pins
wing main bushings, control connectors
general free play
control stick
rudder pedals (damage, centered, paral.)
rudder wire rope
bolts, visible bearings (tail, fuselage)
difficult-to-reach bearings (wings, under cabin floor)
aileron, elevator and rudder hinges
equal spoiler extension, undisturbed m.
spoiler plate springs stiffness
flap handle
elevator trim
springs: flaps, rudder, el. trim, stabilizer main fastening bolt
airbrakes internal connector rod (if flown or stored where possibility for
corrosion is increased (ocean side, wet regions...)
spoilers’ (airbrakes’) drive fine adjustment
Current maintenance schedule for the power train is preliminary and determined according to
Pipistrel’s best knowledge and expertise. As such, the maintenance schedule for the power train is
subject to change. W hen in doubt, contact a Pipistrel representative with any questions.
CC
CCCCCCC
CCR
PROPULSION UNIT
SCR
SCR
(ENGINE BAY, ARM)
motor bay door rubbers ropes
rubber shock absorbers (main)
rubber shock absorbers (actuator)
motor-propeller arm
CR
CR
CR
CHECK CONDITION EVERY DAY
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1
Spoilers (airbrakes) drive fine adjustment
CAUTION! PERFORM THIS OPERATION ONLY ONCE AFTER FIRST 50 FLIGHT HOURS!
CHECK SPOILERS THOROUGHLY FOR UNOBSTRUCTED, SMOOTH AND EVEN EXTENSION
BEFORE EVERY FLIGHT!
2
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Handling and maintenance
79
REV. 3
5
3
4
4
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Handling and maintenance
REV. 3
Schematic of spoilers’ (airbrakes’) drive fine adjustment
1
Perform the adjustment as follows:
2
Unscrew and remove the inner horizontal bolt of the airbrake’s plate. Do not lose any parts!
3
Lift the airbrake in order to make room for further operation.
Unscrew and remove the bolt attaching the rod-end bearing to the airbrake’s plate lever.
4
Do not lose any parts!
Rotate the rod-end bearing fine-setting nut 360° so that the rod end moves towards the
other end of the airbrake’s box (length of rod increases). Make sure you secure this nut after
5
turning it for 360°!
Grease the drive around the rubber sleeve inside the airbrake’s box using rubber-nonagressive lubricant spray.
Once you have accomplished this, repeat steps 1-3 in opposite order (3,2,1). Make sure you apply adhesive (e.g. Loctite) on all screws when reattaching!
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(see next page for detailed description)
Perform the procedure at the other airbrake as well.
When finished, verify airbrakes for equal extension.
WARNING! SHOULD THE AIRBRAKES NOT RETRACT EVENLY, APPLY STEP 4 ACTION AGAIN
FOR THE AIRBRAKE, WHICH REMAINS HIGHER WHEN RETRACTING.
Clicking noise behind the cockpit
The wings are factory fitted to the fuselage to make a tight fit at approximately 20° Celsius. When exposed to low temperatures, materials shrink. Therefore, flying in the winter or in cold temperatures,
you may encounter “click-clack” like noises from behind you. The remedy for this unwanted noise
is to add washers, typically of 0,5 mm thickness in-between wing and fuselage. Washers must be
added both at rear and front bushings on one side of the fuselage only!
WARNING! IT IS MANDATORY TO CONSULT THE MANUFACTURER OR AUTHORISED SERVICE
PERSONNEL BEFORE APPLYING WASHERS!
Bleeding the hydraulic brake system
Two persons are needed to perform the hydraulic brake system bleeding in the traditional way.
First, fill up the hydraulic fluid reservoir, mounted on the bottom of the fuselage behind the cockpit,
with DOT 4 fluid. Then, one person should pump the hydraulic oil towards the main landing wheels
using pumping motion on the airbrake handle. After 5-10 complete forward-aft movements, hold
the airbrakes handle in fully engaged position. Now, the second person must open the bleed valve
on one of the main wheels to bleed the air pockets from the hydraulic lines. Close the bleed valve
each time before continuing with the pumping motion on the airbrake handle.
Repeat this procedure until no more air is bled out of the bleed valve.
Then perform the same procedure for the other main wheel.
WARNING! SHOULD YOU ENCOUNTER ANY DIFFICULTIES DURING THIS PROCEDURE OR
THE AIR POCKETS WOULD NOT VENT, PLEASE CONSULT THE MANUFACTURER OR AUTHORISED
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Schematic of hydraulic brakes’ lining
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Handling and maintenance
81
REV. 3
SERVICE PERSONNEL FOR FURTHER INSTRUCTIONS.
Poor braking action
In case you notice poor braking action even when hydraulic brakes are fully engaged (airbrake lever
full back), it is not necessary the air bubbles in the hydraulic lining, which is causing the problem.
The main wheel’s main axis’ nut (especially after a wheel and/or axis replacement nut) may be tightened incorrectly so that the brake shims do not make contact with the brake plate. Please consult
the manufacturer or authorised service personnel for further information.
Schematic of wheel and wheel brakes
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Handling and maintenance
REV. 3
Special check-ups
After having exceeded VNE or landed in a rough manner:
check the undercarriage, fuselage & wing surfaces and main spars for abnormalities. It is highly
recommended to have the aircraft verified for airworthiness by authorised service personnel.
Tie down
Tie down the Taurus using dedicated screw-in rings which attach to the adequate threads on the
bottom side of the wing. Alternatively you may also tie down the wings using a rope over the winglet area, however, make sure you place a soft piece of foam or equivalent between the wing surface
and the rope, so as not to cause surface and structural damage in case of over-tightening the rope.
Tie down the tail by leading the rope over the fuselage just where the vertical tail surface meets the
fuselage. Tighten this rope in backwards (45°) direction.
CAUTION! COVER THE ENGINE COMPARTMENT AREA AND GAPS TO PREVENT WATER TO
ENTER THE AREA WITH ELECTRICAL COMPONENTS.
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Parking and Storage
The aircraft is ideally stored in a hangar. For increased in-hangar manoeuvrability use of original
push-cart or free turning tail wheel adapter is recommended. Mechanical towing is prohibited at all
times.
Even for over-night storage it is recommended to leave the spoiler (airbrake) handle
unlocked in order to reduce pressure on plate springs in order to maintain their original stiffness.
As for the parachute rescue system make sure the activation handle safety pin is inserted every time
you leave the aircraft.
CAUTION! SHOULD THE AIRCRAFT BE STORED AND/OR OPERATED IN AREAS WITH HIGH AT
MOSPHERIC HUMIDITY PAY SPECIAL ATTENTION TO EVENTUAL CORROSION OF METAL PARTS,
ESPECIALLY INSIDE THE WINGS. UNDER SUCH CIRCUMSTANCES IT IS NECESSARY TO REPLACE
THE SPOILERS AIRBRAKES CONNECTOR ROD EVERY 2 YEARS.
CAUTION! MAKE SURE THE CABIN IS CLOSED AND LOCKED EVERYTIME YOU LEAVE THE AIR
CRAFT. OTHERWISE THE CANOPY FRAME MAY NO LONGER FIT THE FUSELAGE AFTER A WHILE
AS PLEXYGLASS AND FIBER HAVE SIGNIFICANTLY DIFFERENT STRETCH COEFFICIENTS.
CAUTION! WHENEVER LEAVING THE AIRCRAFT PARKED UNDER SUNSHINE, ALWAYS COVER
THE CANOPY WITH A LIGHTCOLOURED CLOTH TO PREVENT OVERHEATING. DO THIS AFTER
YOU HAVE CLOSED AND LOCKED THE CANOPY USING BOTH LATCHES.
Cleaning
Use pure water and a soft piece of cloth to clean the aircraft exterior. If you are unable to remove certain spots, consider using mild detergents. Afterwards, rinse the entire surface thoroughly.
Always use pure water only to clean the glass surfaces, so as not to damage their protection
layers and coatings.
To protect the aircraft surface (excluding glass surfaces) from the environmental contaminants,
use best affordable car wax. (e.g. Sonax Extreme WAX Full Protection no.1)
The interior is to be cleaned with a vacuum cleaner.
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Handling and maintenance
Keeping your aircraft in perfect shape
CAUTION! ALWAYS WHEN USING WATER TO CLEAN THE AIRCRAFT, MAKE SURE THE WATER
DOES NOT ENTER THE ENGINE COMPARTMENT INSIDE THE AREA WITH ELECTRICAL COMPO
NENTS. COVER THE GAPS IF NECESSARY. AVOID USING PRESSURISED WATER TO CLEAN THE
FUSELAGE.
Precautions
1) DO NOT USE ANY aggressive cleaning solutions and organic solvents, also the window cleaning
spray, benzene, acetone, aggressive shampoos etc.
2) If you must use an organic solvent (acetone) on small areas to remove certain glue leftovers
or similar, the surface in question MUST be polished thereafter. The only section where polishing
should be avoided is the edge on the wing where the sealing gasket is applied.
3) When flying in regions with a lot of bugs in the air, you should protect the leading edges of the
airframe before flight (propeller, wings, tail) with Antistatic furniture spray cleaner: “Pronto (transparent), manufacturer: Johnson Wax (or anything equivalent) – Worldwide”, approximate price is only $3
USD / €3 EUR for a 300 ml spray bottle. Using such spray, do not apply it directly onto the wing but
into a soft cloth instead (old T-shirts are best).
4) After having finished with flight activity for the day, clean the leading edges of the airframe as
soon as possible with a lot of water and a drying towel (chamois, artificial leather skin). This will be
very easy to do if you applied a coat of Pronto before flight.
Bugs, which represent the most of the dirt to be found on the airframe, are to be removed with clean
water and a soft mop (can be also drying towel, chamois, artificial leather skin).
To save time, soak all the leading edges of the airframe first. Make sure to wipe ALL of the aircraft
surface until it is completely dry at the end.
Clean the propeller and the areas with greasy spots separately using a mild car shampoo with wax.
CAUTION! DO NOT, UNDER ANY CIRCUMSTANCES ATTEMPT TO USE AGGRESSIVE CLEANING
SOLUTIONS, AS YOU WILL SEVERELY DAMAGE THE LACQUER, WHICH IS THE ONLY PROTECTIVE
LAYER BEFORE THE STRUCTURAL LAMINATE.
When using the aircraft in difficult atmospheric conditions (intense sunshine, dusty winds, coastline,
acid rains etc.) make sure to clean the outer surface even more thoroughly.
If you notice you cannot remove the bug-spots from the leading edges of the aircraft, this means the
lacquer is not protected any more, therefore it is necessary to polish these surfaces.
CAUTION! DO NOT, UNDER ANY CIRCUMSTANCES ATTEMPT TO REMOVE SUCH BUGSPOTS
WITH ABRASIVE SPONGES AND/OR ROUGH POLISHING PASTES.
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Handling and maintenance
REV. 3
Periodical cleaning of all outer surfaces with car shampoo
Clean as you would clean your car starting at the top and working your way downwards using a soft
sponge. Be careful not to use a sponge that was contaminated with particles e.g. mud, fine sand)
not to grind the surface. While cleaning, do soak the surface and the sponge many, many times. Use
a separate sponge to clean the bottom fuselage, as is it usually more greasy than the rest of the airframe. When pouring water over the airframe, be careful not to direct it over the wing-fuselage joining section, parachute rescue system straps and cover, pitot tube, tail static probe and motor covers.
Always water the shampooed surfaces again before they become dry! Thereafter, wipe the whole of
the aircraft dry using a drying towel, chamois or artificial leather skin.
Also, clean the Mylar wing and tail control surfaces gaskets. Lift the gaskets gently and insert ONE
layer of cloth underneath, then move along the whole span of the gasket. Ultimately, you may wish
to apply Teflon grease (in spray) over the area where the gaskets touch the control surfaces.
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Polishing by hand
Use only the highest quality polishing pastes WITHOUT abrasive grain, such as Sonax Extreme no.1
or similar. Start polishing on a clean, dry and cool surface, never in the sunshine!
Machine polishing requires more skills and has its own particularities, therefore it is recommended
to leave it to a professional.
Cleaning the Plexy-glass transparent surfaces
It is most important to use really clean water (no cleaning solutions are necessary) and a really clean
drying towel (always use a separate towel ONLY for the glass surfaces). Should the glass surfaces be
dusty, remove the dust first by pouring water (not spraying!) and gliding your hand over the surface.
Using the drying towel, simply glide it over the surface, then squeeze it and soak it before touching the glass again. If there are bugs on the windshield, soak them with plenty of water first, so less
wiping is necessary. Ultimately, dry the whole surface and apply JT Plexus Spray ($10 USD / €10 EUR
per spray) or at least Pronto antistatic (transparent) spray and wipe clean with a separate soft cotton
cloth.
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Appendix
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Appendix
Conversion tables
Preflight check-up pictures
85
REV. 3
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Appendix
REV. 3
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Conversion tables
kilometers per hour (km/h) - knots (kts) - metres per sec. (m/s)
metres per second (m/s) - feet per minute (100 ft/min)
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Appendix
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REV. 3
m/sec.
0.5011.9610.662141.3320.824180.70
1.0123.9311.172243.3021.334282.67
1.5235.9011.682345.2721.844384.64
2.0347.8712.192447.2422.354486.61
2.5459.8412.752549.2122.864588.58
3.04611.8113.202651.1823.364690.53
3.55713.7813.712753.1523.874792.52
4.06815.7414.222855.1124.384894.48
4.57917.7114.732957.0824.894996.45
5.081019.6815.243059.0525.455098.42
5.581121.6515.743161.0225.9051100.4
6.091223.6216.253262.9226.4152102.3
6.601325.5116.763364.9626.9253104.3
7.111427.5517.273466.9227.4354106.2
100
ft/min
m/sec.
100
ft/min
m/sec.
100
ft/min
7.621529.5217.783568.8927.9455108.2
8.121631.4918.283670.8628.4456110.2
8.631733.4618.793772.8328.9557112.2
9.141835.4319.303874.8029.4658114.1
9.651937.4019.813976.7729.9759116.1
10.162039.3720.324078.7430.4860118.1
TAURUS ELECTRO
88
Appendix
REV. 3
www.pipistrel.si
ICAN (international committee for air navigation)
temperatures, relative pressure, relative density and
CAS to TAS correction factors as related to altitude
Warranty applies to individual parts and components only.
The warranty does not include costs related to the transport of the product, goods and spare parts as
well as costs related to the merchandise’ temporary storage. Pipistrel d.o.o. does not offer guarantee for
the damage caused by every day use of the product or goods. Pipistrel d.o.o. does not guarantee for the
lost profit or other financial or non-financial damage to the client, objects or third party individuals .
Warranty voids:
- in case that the customer has not ratified the General Terms of ownership with his/her signature;
- in case the aircraft or the equipment is not used according to the Pipistrel d.o.o.’s instructions or
aircraft’s manual and eventual supplemental sheets;
95
REV. 3
- in case when the original additional and/or spare parts are replaced with non-original parts;
- in case additional equipment is installed without Pipistrel d.o.o.’s prior knowledge;
- in case the purchased goods were changed or modified in any way;
- in case when the defect is caused by user’s deficient maintenance, inappropriate care and/or cleaning,
user’s negligent handling, user’s inexperience, due to use of product and/or its individual parts or
components in inadequate conditions, due to prolonged use of the product or goods, due to product
and/or parts’ over-stressing (even for a short duration), due to the fact a repair was not carried out
neither by Pipistrel d.o.o. nor by its authorised personnel;
- in case parts that become worn out by every day use (e.g. the covers, pneumatics, electric instruments,
electric installation, bonds and bindings, cables, brake plates, capacitors, cooling devices, various pipes,
spark-plugs, exhaust systems…)
- the owner must ensure regular motor check-outs and maintenance as per the instructions of Pipistrel.
Non compliance with the conditions listed above will void warranty.
The Pipistrel warranty statement is updated occasionally, please
make sure to request the latest version from Pipistrel.