This supplement must be attached to the EASA approved Pilot´s
Operating Handbook of the DR400/120D, DR400/140B, DR400/180R,
DR400/200R or DR400/RP when the TAE 125-01 or TAE 125-02-99
installation has been installed in accordance with EASA.A.S.01380 or
EASA STC 10014219.
The information contained in this supplement supersedes or adds to the
information published in the EASA approved Pilot´s Operating Handbook
only as set forth herein.
For limitations, procedures, performance and loading information not
contained in this supplement, consult the EASA approved Pilot´s
Operating Handbook.
This supplement Pilot‘s Operating Handbook is approved with EASA
This manual contains the following convention and warnings. They
should be strictly followed to rule out personal injury, property damage,
and impairment to the aircraft´s operating safety or damage to it as a
result of improper functioning.
▲ WARNING: Non-compliance with these safety rules could lead to
injury or even death.
CAUTION: Non-compliance with these special notes
and safety measures could cause damage to the engine
or to the other components.
Note: Information added for a better understanding of an
instruction.
FOR DR400 AIRCRAFT FROM SERIAL NUMBER 2500 AND UP
This supplement is valid if the TAE 125-01 or TAE 125-02-99 aircraft
engine is installed.
UPDATE AND REVISION OF THE MANUAL
▲ WARNING: A safe operation is only assured with an up to date POH
supplement.
Note: The document number of this POH supplement is
Engine models ........................................ TAE 125-01 or TAE 125-02-99
The TAE 125-02-99 is the successor of the TAE 125-01. Both engine
variants have the same power output and the same propeller speeds but
different displacement. While the TAE 125-01 has 1689 ccm, the TAE
125-02-99 has 1991 ccm.
Both engine variants are liquid cooled in-line four-stroke 4-cylinder
engines with DOHC (double overhead camshaft) and are direct Diesel
injection engines with common-rail technology and turbocharging. Both
engine variants are controlled by a FADEC system. The propeller is
driven by a built-in gearbox (i = 1.69) with mechanical vibration damping
and overload release. The engine variants have an electrical self-starter
and an alternator.
▲ WARNING: The engine requires an electrical power source for
operation. If the main battery and alternator fail
simultaneously, the engine will operate for a very limited
time on FADEC backup battery power (TAE 125-02-99
installation).
Therefore, it is important to pay attention to indications of
alternator failure.
Due to the specific characteristic of the TAE 125 engine, all of the
information from the original DR400 flight manual recognized by EASA
are no longer valid with the reference to:
carburetor and carburetor pre-heating,
ignition magnetos and spark plugs, and
mixture control and priming system.
PROPELLER
Manufacturer ....................................... MT Propeller Entwicklung GmbH
Model ........................................................................... MTV-6-A/187-129
Number of blades ................................................................................... 3
Type ................................................................................ Constant Speed
NOISE LIMITATION
In compliance with the regulation ICAO, annex 16, Volume I, Part II,
Chapter X, the maximum acceptable noise level for the DR400/120D,
DR400/140B, DR400/180R, DR400/200R, DR400/RP at a certified max.
take-off weight of 980 kg (2161 lb) is 78.4 dB(A).
For the TAE 125-01 installation:
The noise level determined under the conditions of the abovementioned
regulation, with the MT Propeller MTV-6-A/187-129 propeller together
with "Akrapovic type for TAE 125" muffler, is 70.9 dB(A).
The noise level determined under the conditions of the abovementioned
regulation, with the MT Propeller MTV-6-A/187-129 propeller together
with no installed muffler, is 74.4 dB(A).
For the TAE 125-02-99 installation:
The noise level determined under the conditions of the abovementioned
regulation, with the MT Propeller MTV-6-A/187-129 propeller together
with "Akrapovic type for TAE 125" muffler, is 70.2 dB(A).
The noise level determined under the conditions of the abovementioned
regulation, with the MT Propeller MTV-6-A/187-129 propeller together
with “Langer LA 44” muffler, is 69.1 dB(A).
ELECTRICAL SYSTEM
The electrical system of the TAE 125 installation differs from the previous
Page 1 - 2 Issue 3 – July 2014
installation and is equipped with the following operating and display
elements:
1. Rocker Switch "Battery"
The battery must be switched ON in normal operation.
2. The circuit breaker below the Rocker Switch "Battery" disables the
alternator. The alternator can be left ON always.
3. Key Switch "Starter"
This switch controls the starter motor only.
4. Voltmeter
5. Warning lamp "Alternator".
Illuminates when the power output of the alternator is too low or the
circuit breaker “Alternator” (Switch resp.) is switched off. Normally, this
warning lamp always illuminates when the “Engine Master” (“IGN” resp.)
is switched on without revolution and extinguished immediately after
starting the engine.
6. Switch "Engine Master"
The Engine Master switch controls the two redundant FADEC
components, and the back-up alternator excitation battery, with three
independent contacts. It is protected against unintentional switching with
a pull-to-actuate mechanism and a guard. The alternator excitation
battery is used to ensure that the alternator continues to function in any
circumstances even if the main battery fails.
7. Switch "FORCE B"
If the FADEC does not automatically switch from A-FADEC to the BFADEC in case of an emergency despite of obvious necessity, this
switch allows to switch manually to the B-FADEC.
The backup battery ensures power supply to A-FADEC only when supply
from main battery and alternator is interrupted. This allows continued
engine operation for limited time only.
In case of a FADEC-warning, one or both FADEC warning lamps are
flashing. If then the "FADEC" Test Knob is pressed for at least 2
seconds:
a) the active warning lamps will extinguish if it was a LOW category
warning.
b) the active warning lamps will be illuminated steady if it was a
HIGH category warning.
CAUTION: If a FADEC-warning occurred, contact your
service center. Next flight is not permitted.
When a high category warning occurs the pilot should land as soon as
practical, since the affected FADEC ECU has diagnosed a severe fault.
A low category fault has no significant impact on engine operation.
Refer also to the engine manual OM-02-01 or OM-02-02 for additional
information.
FUELS, OILS and LIQUIDS
Approved fuels, oil and liquids are published in Section 2 - Limitations of
this POH Supplement.
▲ WARNING: The engine must not be started if the oil or coolant level is
too low.
CAUTION: Use of unapproved fuels, oil and coolant may result in
damage to the engine and fuel system components,
resulting in possible engine failure.
CAUTION: Normally it is not necessary to fill the cooling liquid or
gearbox oil between maintenance intervals. If the level is
Oil quantity between dipstick min and max indication: .................. 1 liter
Total engine capacity including filters and coolers: .................. 6.7 liters
Approved grades: .................................. Refer to Section 2 – Limitations
CAUTION: Use the approved oil with exact declaration only!
FUEL SYSTEM
The fuel system of the TAE 125 installation includes a variant of the
original standard tank of the DR400, plus a level sender and display, and
an independent low-level warning light. An additional sensor and display
for fuel temperature is installed.
The fuel flows out of the tank to the Fuel Selector Valve which has
positions ON and OFF.
The electrically driven fuel pump supports the fuel flow to the filter
module if required. Upstream to the fuel filter module a thermostatcontrolled fuel pre-heater is installed. Then, the engine-driven feed pump
and the high-pressure pump supply the rail, from where the fuel is
injected into the cylinders depending upon the position of the thrust lever
and regulation by the FADEC.
Surplus fuel flows to the filter module and then through the fuel selector
valve back into the tank. A temperature sensor in the filter module
controls the heat exchange between the fuel feed and return. Since
Diesel fuel tends to form paraffin at low temperatures, the information in
Section 2 “Limitations“ pertaining to fuel temperature have to be
observed. The fuel return ensures a quicker warm up of the fuel in the
tank.
If Diesel fuel is used, Diesel fuel according DIN EN 590 has to be used
exclusively.
Note: There are differences in the national
supplements to EN 590. Approved are Diesel fuels with
the addition DIN EN 590.
Table 1-1 Fuel Capacity
OPTIONAL EXTENDED RANGE TANK
▲ WARNING: The optional tank is only approved for Jet-A1
The total fuel capacity can be increased to 160 l / 35.2 Imp gal / 42.24
US gal (159 l / 35 Imp gal / 42 US gal usable) by installing an optional
fuel tank of 50 l / 11 Imp gal / 13.2 US gal.
The optional tank is located in the fuselage, aft of the rear seat. The fuel
from the optional tank can be transferred into the main tank by pulling the
transfer valve control, located on the instrument panel. The fuel
temperature and the fuel level of the optional tank are displayed either on
the triple indicator or on the quad indicator (depending on the instrument
panel model) when a momentary switch is pushed (warning LED signal).
Note: The main fuel tank must be empty enough
to receive full quantity from the optional fuel tank.
Since the optional fuel tank is not heated, it is limited to the use of
JET A-1 only to prevent a potential clogging of Diesel Fuel to low
temperature.