Reproduction of this publication or any portion thereof by any means without the express written
permission of Honeywell is prohibited. For further information contact the Manager, Technical
Publications, Honeywell, One Technology Center, 23500 West 105th Street Olathe KS 66061
Telephone: (913) 782-0400.
This manual contains information relative to the physical, mechanical, and electrical characteristics of the BENDIX/KING KLN 90B Global Positioning System (GPS) Receiver. General installation procedures are also included.
1.2 EQUIPMENT DESCRIPTION
The KLN 90B is a panel mounted, long range, GPS based airborne navigation system with a data
base. The primary purpose of the equipment is to provide the pilot with present position information and to display guidance information with respect to a flight plan defined by the pilot. Flight
plan information is entered by the pilot via various knobs and buttons on the front panel. The display consists of a right and left page and a status line at the bottom of the display. The information on the left page is controlled by the concentric knobs on the left side of the unit and the information on the right page is controlled by the concentric knobs on the right side of the unit.
Present position information will be displayed on the unit CRT or can also be displayed on an
EFIS or Radar Graphics unit.
The unit can use its present position information to determine crosstrack error, distance-to-waypoint, ground speed, track angle, time to waypoint, bearing to waypoint and advisory VNAV guidance. The internal data base of the KLN 90B contains information concerning airports, VORs,
NDBs, intersections, and outer markers throughout the world. Waypoints are stored in the data
base by their ICAO identifiers. The ICAO identifiers are in most cases taken directly from Jeppesen Sanderson or government aeronautical charts.
The information stored in the data base eventually becomes out of date; therefore, to provide a
means of updating the information, the database is housed in a cartridge which plugs into the
back of the KLN 90B. It is designed so that the user may easily remove the old database cartridge and install a current database cartridge. A secondary method of updating the database is
by loading the information via an IBM compatible laptop computer. For more information on availability and cost of updating the database of the KLN 90B refer to the KLN 90B Pilots Guide P/N
006-08773-0000.
1.3 TECHNICAL CHARACTERISTICS
1.3.1 ARINC 429 GAMA FORMAT INFORMATION
ARINC 429 is a serial bus interface that provides information to and from the KLN 90B to external
equipment. The serial bus conforms to ARINC 429 specifications for electrical characteristics,
receiving, and transmission interval. The format of the labels are GAMA 429 format.
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The following labels are received on the EFIS 429 receiver inputs (Pins 4 and 5 of P901):
TABLE 3-1 EFIS 429 Receiver Inputs
LABEL(OCTAL)DESCRIPTION
100SELECTED COURSE
306NAV/WPT/APT LATITUDE
307NAV/WPT/APT LONGITUDE
314
OR
320
The following labels are received on the Radar Graphics 429 receiver inputs (Pins 6 and 7 of
P901):
TABLE 3-2 Radar Graphics 429 Receiver Inputs
LABEL(OCTAL)DESCRIPTION
306NAV/WPT/APT LATITUDE
307NAV/WPT/APT LONGITUDE
The following labels are received by the KLN 90B on the Air Data 429 receiver inputs (Pins 8 and
9 of P901):
TABLE 3-3 Air Data 429 Receiver Inputs
TRUE HEADING
MAGNETIC HEADING
LABEL(OCTAL)DESCRIPTION
203ALTITUDE (1013.25 MB)
204BARO CORRECTED ALTITUDE
205MACH
210TRUE AIRSPEED
211TOTAL AIR TEMPERATURE
213STATIC AIR TEMPERATURE
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BENDIX/KINGKLN 90B
The following labels are transmitted by the KLN 90B on the ARINC 429 transmitter output (Pins
23 and 24 of P901):
TABLE 3-4 Arinc 429 Gama Transmitter Output)
LABEL(OCTAL)DESCRIPTION
001DISTANCE TO GO (BCD)
002TIME TO GO (BCD)
012GROUND SPEED (BCD)
074DATA RECORD HEADER
075ACTIVE WAYPOINT FROM/TO DATA
100SELECTED COURSE #1
113MESSAGE CHECKSUM
114DESIRED TRACK (TRUE)
115WAYPOINT BEARING (TRUE)
116CROSS TRACK DISTANCE
121HORIZONTAL COMMAND
147MAGNETIC VARIATION
150GREENWICH MEAN TIME
251DISTANCE TO GO
252TIME TO GO
261GPS DISCRETE WORD
275LONG RANGE NAV STATUS
300STATION MAGNETIC VARIATION,
TYPE, AND CLASS
303MESSAGE LENGTH/TYPE/NUMBER
304MESSAGE CHARACTERS 1-3
305MESSAGE CHARACTERS 4-6
306NAV/WPT/APT LATITUDE
307NAV/WPT/APT LONGITUDE
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BENDIX/KINGKLN 90B
310PRESENT POSITION LATITUDE
311PRESENT POSITION LONGITUDE
312GROUND SPEED
313TRACK ANGLE (TRUE)
314TRUE HEADING
315WIND SPEED
316WIND ANGLE (TRUE)
321DRIFT ANGLE
326LATERAL DEVIATION SCALE FACTOR
351 DISTANCE TO DESTINATION (VIA
FLIGHT PLAN)
352TIME TO DESTINATION (VIA FLIGHT
PLAN)
371SPECIFIC EQUIPMENT IDENT
377EQUIPMENT HEX ID CODE
For RS 232 I/O formats, refer to Appendix A.
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BENDIX/KINGKLN 90B
1.3.3 UNIT TECHNICAL CHARACTERISTICS
Table 3-6 KLN 90b
TSO ComplianceSEE TSO APPENDIX
Physical Dimensions:
Width:6.312 in. (16.03 cm.)
Height:2.00 in. (5.08 cm.)
Length:12.55 in. (31.87 cm.)
Weight:6.30 lbs. (2.86 Kg.)
Mounting:Panel mounted with Honeywell supplied
mounting rack
Cooling Requirements:4 CFM (cubic feet per minute) provided by
blower motor such as KA 33 or equivalent
OPERATIONAL CHARACTERISTICS:
Temperature Range:-40° C to +70° C
Altitude Range:Up to 50,000 FT
Power Inputs:11 to 33 VDC at 2.5 A MAX (-40°C to
+70°C)
Panel Lighting Current Requirements:
28 VDC Lighting:286 mA max
14 VDC Lighting:572 mA max
5 VDC Lighting:1.0 A max
5 VAC Lighting1.0 A max (400 Hz rms)
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Table 3-7 KLN 90B Signal Inputs
GPS DISPLAYED:OPEN = GPS displayed (when an indicator resolver is
connected to the OBS resolver inputs)
GND = GPS not displayed (when an indicator resolver is
not connected)
TAKE HOME:OPEN = Normal Operation
GND = Take Home Mode
SDI 1/2:OPEN = Primary Long-range Navigation System
GND = Secondary Long-range Navigation System
EFIS 429 RCVR inputs:See Section 1.3.1
RDRG (Radar Graphics)
429 inputs:
AIR DATA 429 Inputs:See Section 1.3.1
ARM SELECT:This pin is used as a mode programming pin on power-up
LEG/OBS CONTROL:This pin is used as a mode programming pin on power-up
DATA LOADER IN:The Data Loader RS 232 input is designed to communi-
RS 232 IN:The RS 232 input is designed to communicate with devic-
ALT ALERT:ENABLED = Open (or tied to A/C Power thru a passive
See Section 1.3.1
and later as a select input.
and later as a control input.
cate with the dataloader
es, i.e. air data and fuel flow sensors via RS 232 format
(refer to Appendix A)
load)
DISABLED = GND (This pin also functions as an output,
refer to section 2.3.6.2.X. for details)
Table 3-8 KLN 90B Gray Code Inputs
(A1,A2,A4,B1,B2,B
4,C1,C2,C4,D4)
OBS RES SIN:OBS resolver sine, nominal input impedance = 36.5 K ohms (ac)
OBS RES COS:OBS resolver cosine, nominal input impedance = 36.5 K ohms
Page 1-610521I05.TDCRev 5, April/2003
Gray Code Altitude Signals (0 V. to 28 V.) These inputs are diode
isolated inside the KLN 90B on all units above S/N 1542
and 100 K ohms (dc)
(ac) and 100 K ohms (dc)
BENDIX/KINGKLN 90B
Table 3-9 KLN 90B Signal Outputs
OBI SYNC,
CLOCK, & DATA:
RS 232 OUT:The RS232 output is designed to interface with certain ARNAV ELTs
WPT ALERT:
(Waypoint Alert)
MSG:
(Message)
APPROACH
ACTIVE:
APPROACH
ARM:
CDI Output:Output is capable of driving up to five 1 KW parallel loads, Output
Honeywell Serial Data containing bearing to the active waypoint
and certain moving map displays, storm scopes, and Shadin fuel
flow systems (refer to Appendix A)
OPEN = Inactive
LOW = Active (Output can sink up to 250 mA
OPEN = Inactive
LOW = Active (Output can sink up to 250 mA)
OPEN = Inactive
LOW = Active (Output can sink up to 250 mA
OPEN = Inactive
LOW = Active (Output can sink up to 250 mA
drive range: $300 mV ($ 150 mV full scale)
30 mV per nautical mile (Full scale = 5 nautical mile)
150 mV per nautical mile (Full scale = 1 nautical mile) 500 mV per
nautical mile (Full scale = .3 nautical mile)(Voltage at pin 22 is relative to voltage at pin 25)
The CDI output can manually be selected to the sensitivity of one of
the three sensitive modes listed below.
Enroute:5, 1 or .3 nautical mile scale factor selectable
Approach Arm:1 or .3 nautical mile scale factor selectable
Approach:.3 nautical mile scale factor only
Table 3-10 KLN 90B NAV Flag Output
Flag Pulled out
of view:
Flag in view:< 50mVOutput capable of driving up to five 1 KW parallel loads
Nav Super Flag
Output:
OBS Resolver
Out:
350 to 900 mV
Valid = >18 V in 28 VDC aircraft installations; >10 V in 14 VDC aircraft installations Invalid = <3.5 V in all installations while sinking 1
mA max. Output can source up to 250mA
Nominal output frequency = 450 Hz Nominal unloaded peak amplitude = 6 V Output drive capability = 40mA
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Table 3-11 KLN 90B To/From Flag Output
To Indication:+40 to +160 mV on Pin 21 with respect to Pin 20
From Indication:-40 to -160 mV on Pin 21 with respect to Pin 20
Output capable of driving up to five 200 W parallel loads
Arinc 429 Xmitter:
DATA LOADER
OUT:
ALT ALERT:HIGH = Inactive
ALT ALERT AUDIO:
TSO Compliance:SEE TSO APPENDIX
Physical Dimensions:
See Section 1.3.1
The Data Loader RS 232 output is designed to communicate with an
IBM compatible personal computer
LOW = Active (can sink up to 250 mA). This pin also functions as an
input, refer to section 2.3.6.2.X. for details)
This output is active whenever ALT ALERT is active, Signal is 1
KHz., 3.5 V rms max into 500 W
KA 91 ANTENNA
Table 3-12 KA 91
Width:2.90 in. (7.37 cm.)
Height:0.75 in. (1.91 cm.)
Length:4.70 in. (11.94 cm.)
Weight:0.5 lbs. (0.227 Kg.)
Airspeed Rating:600 Kts. TAS
Output Impedance:50 Ohms (nominal)
DC Voltage:5 Volts $0.5 Volt
DC Current:50 mA maximum
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BENDIX/KINGKLN 90B
Table 3-13 KA 92
KA 92 ANTENNA
TSO Compliance:SEE TSO APPENDIX
Physical Dimensions:
Width:2.70 in. (6.86 cm.)
Height:0.70 in. (1.78 cm.)
Length:4.30 in. (10.92 cm.)
Weight:0.27 lbs. (0.12 Kg.)
Airspeed Rating:600 Kts. TAS
Output Impedance:50 Ohms (nominal)
DC Voltage:5 Volts $0.5 Volt
DC Current:50 mA maximum
Table 3-14 KA 198 Comm Filter
P/N 071-01565-0000
Center Notch Frequency:1575.42 MHz.
Attenuation at 1575.42 ;1.5 MHz:35 dB min.
Insertion loss from 118.00 to137.00 MHz:.3dB Max.
Impedance from 118.00 to137.00 MHz:50 ohms
VSWR from 118.00 to 137.00 MHz:1.5:1
NOTE
The conditions and tests performed on this article
are minimum performance standards. It is the re-
sponsibility of those desiring to install this article either on or within a specific type or class of aircraft to
determine that the aircraft installation conditions are
within these performance standards. The article may
be installed only if further evaluation by the applicant
documents an acceptable installation and is ap-
proved by the Administrator.
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BENDIX/KINGKLN 90B
1.4 UNITS AND ACCESSORIES SUPPLIED
1.4.1 KLN 90B GPS RECEIVER
The KLN 90B is available in the following versions. New manufactured KLN 90B units are P/N
066-04031-1X21/1X22/1X24 and KLN 90/A units that have been converted to KLN 90B are P/N
066-04031-2X21/2X22/2X24.
Table 3-15 KLN 90B Versions
PART NUMBER14/
28V
LAMP
066-04031-1121X--X----
066-04031-1221-X-X----
066-04031-1321X---X---
066-04031-1421-X--X---
066-04031-1521X-XX----
066-04031-1621-XXX----
066-04031-2121X--X--X-
066-04031-2221-X-X--X-
066-04031-2321X---X-X-
066-04031-2421-X--X-X-
066-04031-1122X--X-X--
066-04031-1222-X-X-X--
5V
LAMP
NIGHT
VISION
GOGGLE
BLACK
BEZEL
GREY
BEZEL
BRNAV
CAPABLE
(1)
UPGRADED
KLN 90B’s
ARINC
734A
CAPABLE
(2)
066-04031-1322X---XX--
066-04031-1422-X--XX--
066-04031-1522X-XX-X--
066-04031-1622-XXX-X--
066-04031-2122X--X-XX-
066-04031-2222-X-X-XX-
066-04031-2322X---XXX-
066-04031-2422-X--XXX-
(1) BRNAV Capable - Is capable of meeting the JAA AMJ 20X2 requirements.
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BENDIX/KINGKLN 90B
1.4.2 GPS ANTENNA
The KA 91 antenna is available by ordering P/N 071-01545-0200. The KA 92 antenna is available
by ordering P/N 071-01553-0200.
1.4.3 KLN 90/90B INSTALLATION KITS
The KLN 90/90B Installation Kit (P/N 050-03096-0000) is available with crimp connectors only. A
list of the required crimp tools and insertion/ extraction tools can be found in Section 2 of this manual. The kit and a complete list of the items contained in the kit is given below.
Table 3-16 KLN 90B Installation Kits
P/NDESCRIPTIONUM0000VENDOR NAME
P/N
050-03096-0000KLN90 INSTALL-CRIMPX
030-00101-0002 PANEL MOUNT PLUG (J902)EA1TED Mfg. 9-30-10
030-01157-0011 SOCKET CRMP 20GEA50Positronics
FC6020D-14
030-01176-0000 CONN SUB-D HSG 50S (J901) EA 1 Positronics
RD50F00000-
782.0
030-01428-0006 HOOD W/SPCL LCK 50P EA 1 Positronics
D50000 GVLD
033-00230-0000DATA LOADER JACKEA1
057-05621-0000DECAL DATA LOADEREA1
057-05628-0000GPS DISCLAIMEREA1
071-01541-0000MOUNTING RACK ASSYRFX
071-06121-0000ALLEN WRENCH .094EA2
089-02353-0001NUT CLIP 6-32EA4
089-06012-0008SCR FHP 6-32X1/2EA4
089-08252-0030WASHEREA1
090-00019-0007RING RTNR .438EA1
187-01722-0000GASKETEA1
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BENDIX/KINGKLN 90B
1.4.4 KA 91/92 INSTALLATION KIT
The KA 91 Installation Kit (P/N 050-03195-0000), including its contents, is shown below.
Table 3-17 KA 91 Installation Kits
P/NDESCRIPTIONUM-
0000
050-03195-0000KA91 INSTALLX
030-00134-0001RIGHT ANGLE CONN
COAX
047-10130-0002BACKPLATE, ANTENNAEA1
089-06908-0012SCREW, AIRCRAFTEA4
187-01807-0000KA 91 GASKETEA1
Earlier installation kits included a straight TNC coax connector, P/N 030-00134-0000.
The KA 92 Installation Kit (P/N 050-03318-0000), including its contents, is shown below.
Table 3-18 KA 92 Installation Kits
P/NDESCRIPTIONUM-0000VENDOR NAME & P/
EA1TED MFG 5-30-102
VENDOR NAME &
P/N
N
050-03318-0000KA92 INSTALLX
030-00134-0001RIGHT ANGLE CONN
COAX
047-10735-0002BACKPLATE, ANTENNAEA1
089-05909-0012SCREW, PHP 8-32x3/4EA4
187-01831-0000KA 92 GASKETEA1
1.4.5 DATABASE
The KLN 90/90B database cartridge is available for three separate geographic areas.
North American Database071-01523-0302
Atlantic International Database071-01523-0304
Pacific International Database071-01523-0305
EA1TED MFG 5-30-102
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BENDIX/KINGKLN 90B
1.5 ACCESSORIES REQUIRED, BUT NOT SUPPLIED
A. Forced Air Cooling
A KA 33 Cooling Kit or equivalent is required for the KLN 90B installation.
1. KA 33 Blower for 14 VDC installations is available under P/N 071-4037-00.
2. KA 33 Blower for 28 VDC installations is available under P/N 071-4037-01.
3. The installation kit for the KA 33 Blower is available under P/N 050-02204-0000.
B. Indicators and HSIs
An indicator, CDI or HSI, is required for IFR. Listed below are common Honeywell models
that are available.
1. KI 202 (P/N 066-3034-XX) Navigation Indicator and installation kit
(P/N 050-01524-0000).
2. KI 206 (P/N 066-3034-XX) Navigation Indicator and installation kit
(P/N 050-01524-0000).
5. KI 525A (P/N 066-3046-XX) Horizontal Situation Indicator and installation kit
(P/N 050-01344-XXXX). Refer to section 2.4.1, KLN 90B OBS Resolver Calibration
Procedure for 30 Hz indicator calibration.
C. CDI Indicator with "MSG" and "WPT" Annunciators.
Some standalone CDI indicators are available with WPT/MSG annunciators built in. One
commonly used is the Model MD40-39, manufactured by Midcontinent Instrument, telephone (316) 683-5619.
1.6 OPTIONAL ACCESSORIES
A. KA 90 Interface Adapter
Order P/N 071-01508-0101 or 071-01508-0202 for a KA 90 Interface Adapter. The KA 90
interfaces the KLN 90B with various other avionics in an aircraft. It converts GAMA 429
output to analog in order to drive mechanical HSI/CDI devices. It also converts analog
heading and HSI/CDI outputs into 429 data.
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Functions of the -0101 include converting 3-wire heading sources to ARINC 429, converting the resolver output of a non-driven HSI to ARINC 429 so that the KLN 90B can read
the selected course from the HSI, converting binary ARINC 429 data to BCD ARINC 429,
and converting low speed ARINC 429 to high speed ARINC 429. Functions of the 0201/
0202 include all of the functions of the -0101 plus converting ARINC 429 bearing outputs
from the KLN 90B to 3-wire XYZ RMI and 4-wire sin/cos OBI formats, converting ARINC
429 distance information to ARINC 561/568 6-wire format, providing interface with Collins
EHSI 74 and EFIS 85/85A/86A/86B/86C, and converting ARINC 429 roll steering data to
an analog format.
B. PC Interface Kit
To load the database from a personal computer via diskettes, order interface kit P/N 05003213-0000. The kit contains a ready to use cable which connects between the aircraft
connector and the computer’s 9 pin or 25 pin serial connector.
The database may be loaded directly from the PC to the KLN 90B installed in an aircraft,
or the PC may be used to update the KLN 90B while it is installed in a KCC 90 (refer to
section 2.4.4.11 and Figure 2-18 for details) or Commander 2000K from Lone Star Avion-
ics
phone (817)548-7768.
Laptop computers used to load the data base require the following:
1. IBM compatibility
2. An available Com 1 or Com 2 serial port
3. A 3.5" high density diskette drive
NOTE
Not all laptops conform to the above requirements. If
there is uncertainty relating to this, contact Honeywell
Product Services by telephoning (913) 782-0600.
C. Annunciators and Switch/Annunciators
(Refer to I.B. 363 for additional information pertaining to switch/annunciators for GPS systems)
The devices shown below are Eaton 582/584 series switch/annunciators and are representative of those used in our original certification. They were chosen because of their
excellent sunlight readable characteristics and meet or exceed the requirements of Advisory Circular 20-138. These are high quality devices and we encourage their use, However, there are other comparable devices on the market that may be substituted at the installer/customers choice, such as the Mid-Continent Instrument, MD41.
These switch/annunciators are available through Honeywell Service Stock or direct from
our supplier, LCOMP Aerospace Controls. It is advantageous to order direct from LCOMP,
if possible, in order to avoid additional price mark-ups. LCOMP’s address and telephone
number are listed as follows:
LCOMP Aerospace Controls
c/o Carlton-Bates Co. (800) 786-0617
9214 Bond St. (913) 438-4848
Overland Park, KS 664214 (913) 438-4839 Fax
Page 1-1410521I05.TDCRev 5, April/2003
BENDIX/KINGKLN 90B
NOTE
The part numbers shown in parenthesis are annun-
ciators previously called out and may be used until
supply is depleted.
Replacement bulbs for 031-00785-xxxx
5V 037-00009-0007
14V 037-00009-0008
28V 037-00009-0006
KLN 90B Enroute/Terminal Set for CDI or Elect. Mech. HSI Installations
The following switch/annunciators are being offered for CDI or HSI switching and annunciation in
the KLN 90B IFR enroute/terminal installations. They are optional for KLN 90B/KLX 135 VFR installations.
KLN 90/B or KLX 135 Ann. Set (28 V. ltg.)
NAV/GPS Sw. Ann. 031-00785-0711 or (031-00763-0711)
WPT/MSG Ann. 031-00785-0505 or (031-00763-0505/-0718)
KLN 90/B or KLX 135 Ann. Set (14 V. ltg.)
NAV/GPS Sw. Ann. 031-00785-0712 or (031-00763-0712)
WPT/MSG Ann. 031-00785-0762 or (031-00763-0762/-0719)
KLN 90/B or KLX 135 Ann. Set (5 V. ltg.)
NAV/GPS Sw. Ann. 031-00785-0713 or (031-00763-0713)
WPT/MSG Ann. 031-00785-0506 or (031-00763-00506/-0720)
KLN 90B Approach Set for CDI or Elect. Mech. HSI Installations
The following switch/annunciators are being offered for CDI or HSI switching, GPS CRS and APR
switching, and annunciation in KLN 90B non-precision approach installations.
NOTE
The GPS CRS OBS/LEG switch annunciators were
available in two different color configurations. Both
versions were approved for use with the GPS’s. The
white OBS was the preferred version.
The 031-00785-0763/0764/0765 versions were visible white for the GPS CRS
field, yellow for the OBS field and green for the LEG field.
The 031-00785-0778/0779/0780 versions were visible white for the GPS CRS
field, white for the OBS field and green for the LEG field.
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BENDIX/KINGKLN 90B
KLN 90B Ann. Set (28 V. Ltg.)
NAV/GPS Sw. Ann. 031-00785-0711 or (031-00763- 0711)
WPT/MSG Ann. 031-00785-0505 or (031-00763- 0505/-0718)
GPS CRS OBS/LEG
Sw. Ann. 031-00785-0778 or (031-00785-0763)
GPS APR ARM/ACT
Sw. Ann. 031-00785-0766
KLN 90B Ann. Set (14 V. Ltg.)
NAV/GPS Sw. Ann. 031-00785-0712 or (031-00763- 0712)
WPT/MSG Ann. 031-00785-0762 or (031-00763- 0762/-0719)
GPS CRS OBS/LEG
Sw. Ann. 031-00785-0779 or (031-00785-0764)
GPS APR ARM/ACT
Sw. Ann. 031-00785-0767
KLN 90B Ann. Set ( 5 V. Ltg.)
NAV/GPS Sw. Ann. 031-00785-0713 or (031-00763- 0713)
WPT/MSG Ann. 031-00785-0506 or (031-00763- 0506/-0720)
GPS CRS OBS/LEG
Sw. Ann. 031-00785-0780 or (031-00785-0765)
GPS APR ARM/ACT
Sw. Ann. 031-00785-0768
KLN 90A Upgrade to KLN90B Approach Set
If a KLN 90A is upgraded to a KLN 90B, the additional GPS CRS and GPS APR switch/annunciators are needed.
or
KLN 90B with EFIS Approach Set
Most EFIS systems will provide NAV/GPS switching and WPT/MSG annunciation but still require
external GPS CRS and GPS APR switch/annunciators.
NOTE
The GPS CRS OBS/LEG switch annunciators were
available in two different color configurations. Both
versions were approved for use with the GPS’s. The
white OBS was the preferred version.
The 031-00785-0763/0764/0765 versions were visible white for the GPS CRS
field, yellow for the OBS field and green for the LEG field.
The 031-00785-0778/0779/0780 versions were visible white for the GPS CRS
field, white for the OBS field and green for the LEG field.
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BENDIX/KINGKLN 90B
EFIS or KLN90A to 90B Upgrade Ann. Set (28 V. ltg.)
GPS CRS OBS/LEG
Sw. Ann. 031-00785-0778 or (031-00785-0763)
GPS APR ARM/ACT
Sw. Ann. 031-00785-0766
EFIS or KLN90A to 90B Upgrade Ann. Set (14 V. ltg.)
GPS CRS OBS/LEG
Sw. Ann. 031-00785-0779 or (031-00785-0764)
GPS APR ARM/ACT
Sw. Ann. 031-00785-0767
EFIS or KLN90A to 90B Upgrade Ann. Set (5 V. ltg.)
GPS CRS OBS/LEG
Sw. Ann. 031-00785-0780 or (031-00785-0765)
GPS APR ARM/ACT
Sw. Ann. 031-00785-0768
NAV/GPS Switch/Annunciator
Installations where the outputs from KLN 90B and an existing navigation system are switched be-
tween a common indicator or HSI may require some type of annunciation. A NAV/GPS switch/annunciator is available that provides both the annunciation and a switch contact to energize the
switching relay(s) required for the switching of the outputs. This Switch/Annunciator is available in
5 V, 14 V, or 28 V versions as shown below.
LIGHTING Honeywell P/N Honeywell P/N
28 V 031-00763-0711 031-00785-0711
5 V 031-00763-0713 031-00785-0713
14 V 031-00763-0712 031-00785-0712
(Eaton Series 584) (Eaton Series 582)
WPT/MSG Remote Annunciators
The KLN 90B contains two outputs: 1) Waypoint Alert (WPT) and 2) Message (MSG). Annuncia-
tion of these outputs is required for certification purposes. A remote annunciator unit is available
to annunciate these outputs and is offered in either 5 V, 14 V, or 28 V versions as shown below.
The original design of this unit contained the required (WPT) and (MSG) plus two additional fields
(-/-) as it was expected that additional annunciation would be required in the future. It has now
been determined, however, that additional annunciation will not be required. Therefore, a new design is being offered that contains only the (WPT) and (MSG) fields which allows improved readability. Both options are listed in the following.
Rev 5, April/200310521I05.TDCPage 1-17
BENDIX/KINGKLN 90B
FOUR FIELD ANNUNCIATORS (WPT/MSG/---/---)
LIGHTING Honeywell P/N
28 V 031-00763-0718
14 V 031-00763-0719
5 V 031-00763-0720
NOTE: (WPT) AND (MSG) will be in amber color and the dashes in green. These an-
nunciators will be deadface and readable only when lit. Dashes will only be lit
during an annunciator test as a function of the aircraft installation.
TWO FIELD ANNUNCIATORS (WPT/MSG)
LIGHTING Honeywell P/N Honeywell P/N
28 V 031-00763-0505 031-00785-0505
14 V 031-00763-0506 031-00785-0506
5 V 031-00763-0762 031-00785-0762
(Eaton Series 584) (Eaton Series 582)
NOTE: (WPT) AND (MSG) will be in amber color. These annunciators will be deadface
and readable only when lit.
GPS CRS, OBS/LEG Switch/Annunciator
The KLN 90B may operated in either of two modes, LEG or OBS. In LEG mode, the flightplan legs
will automatically sequence as determined by present position. In OBS mode, the active waypoint
and inbound or outbound course will be manually selected. The Remote OBS/LEG Switch/Annunciator is recommended for non-precision approaches to reduce pilot workload.
The selection of OBS or LEG may be accomplished in either of two methods.
Method 1:
Select the Mode Page by rotating the left outer knob
Turn the left inner knob to select OBS or LEG
Press ENTER to activate the mode
Method 2:
Press the Remote OBS/LEG switch/annunciator to change modes
If the Remote OBS/LEG Switch/Annunciator is installed, the KLN 90B will sense its presence, on
turn-on, and disallow selection of OBS/LEG modes by the KLN90B front panel controls. If the remote switch is not installed, the front panel controls will function as before.
LIGHTING Honeywell P/N orHoneywell P/N
28 V 031-00785-0778 or 031-00785-0763
14 V 031-00785-0779 or 031-00785-0764
5 V 031-00785-0780 or 031-00785-0765
(Eaton Series 582)
Page 1-1810521I05.TDCRev 5, April/2003
BENDIX/KINGKLN 90B
GPS APR, ARM/ACTV Switch/Annunciator
The KLN 90B requires a switch/annunciator for arming, disarming, or deactivating the approach
mode. It will provide remote annunciation of ARM and ACTV and provide a momentary switch
function to arm, disarm, or deactivate the Approach Mode and change the CDI scale factors.
Installations in which the outputs from a KLN 90B and an existing navigation system are
being switched onto a common indicator will require some remote relay switching that is
controlled by the NAV/GPS switch/annunciator.
E. Straight TNC antenna Connector
The part number for a straight connector for the KA 91 or KA 92 antenna connection is
030-00134-0000.
1.7 LICENSE REQUIREMENTS
None.
1.8 RECOMMENDATIONS FOR IFR APPROVAL
1. Aircraft Logbook Entry
2. Aircraft Installation Requirements
The following interface functions were not required for a VFR KLN 90 but are required for
an IFR’d KLN 90B installation.
TSO’d Antenna
The antenna must be a TSO’d KA 91, P/N 071-01545-0200 or KA 92 P/N 071-01553-
0200. If the P/N of the KA 91 is not available, it may be identified by the serial number as
the TSO’d antennas have a five digit serial number. If the antenna is a non-TSO’d KA 91,
P/N 071-01545-0100, and the KLN 90B is a modified KLN 90, the antenna is eligible for
exchange as part of the upgrade program.
xNav Instrumentation
The navigation information (D-Bar, Nav Flag, and To-From) must be displayed on an
instrument in the pilot’s panel.
Electromechanical indicators are capable of displaying the variable scale factors of
enroute, terminal, and approach modes. If the NAV information is displayed on an EFIS
system, it must be capable of displaying variable D- Bar scaling required for GPS
approaches. This may require a modification to the EFIS system. (Refer to section 1.5
for a list of typical Nav indicators).
Rev 5, April/200310521I05.TDCPage 1-19
BENDIX/KINGKLN 90B
NOTE
The KPI 552/553/553A’s interfaced to the KNR 665
digital Gold Crown are not compatible with the KLN
90B.
xOBS Interface
For approach approval, the OBS resolver must be interfaced so that selected course
through the HSI/CDI indicator will be sent to the KLN 90B for D-Bar resolution. In mechanical indicators, it will be accomplished by switching the OBS resolver lines; and in
EFIS installations, it will be usually through the serial busses. Some EFIS applications
may require an adapter. (Refer to section 2.3.6.2.P for OBS resolver interface characteristics).
xSwitch/Annunciators:
NAV/GPS (Switch/Annunciator)
If the navigation information is displayed on a shared primary indicator a
switch/annunciator will be required to select and annunciate the source unless the
indicator is part of an EFIS system that provides that function.
WPT/MSG (Annunciator)
The required annunciators are "WPT" and "MSG" only. Even though the information is
available on the KLN 90B display, a remote annunciator is also required in the pilots
panel unless it is accomplished in an HSI/CDI or EFIS display.
GPS CRS, OBS/LEG (Switch/Annunciator)
The KLN 90B may operate in either of two modes, LEG or OBS. In LEG mode, the
flightplan legs will automatically sequence as determined by present position. In OBS
mode, the active waypoint and inbound or outbound course will be manually selected.
The Remote OBS/LEG Switch/Annunciator is recommended for non-precision
approaches to reduce pilot workload.
GPS APR, ARM/ACTV (Switch/Annunciator)
The KLN 90B requires a switch/annunciator for arming, disarming, or deactivating the
approach mode. It will provide remote annunciation of ARM and ACTV and provide a
momentary switch function to arm, disarm, or deactivate the Approach Mode and
change the D-Bar scale factors. (Refer to section 1.6.C for typical switch/annunciators).
xAltitude Source
An altitude source is required for IFR certification. The altitude may be derived from a
compatible encoding altimeter, some RS 232 air data systems, and most ARINC 429
air data systems. (Refer to figure 2-17 for typical altitude sources).
xIsolation Diodes
KLN 90’s below S/N 1542 did not have isolation diodes on the encoding altimeter in-
puts.
Page 1-2010521I05.TDCRev 5, April/2003
BENDIX/KINGKLN 90B
The KLN 90/90A’s upgraded to KLN 90B’s that are below S/N 1542 still will not have
isolation diodes and may need to have them added to the installation. If the KLN 90B
is without diode isolation and is paralleled with another unit such as a transponder, the
combination can cause a loading effect which may result in one or all of the units in
parallel being disabled. If the KLN 90B is connected to a dedicated encoding altimeter,
the diodes are not necessary.
3. Approved Airplane Flight Manual Supplement
A flight manual supplement will need to be prepared and approved. The supplement may
be prepared based on the sample, P/N 006-00835-0000. Refer to Appendix B for information on preparing a flight manual supplement and a copy of the STC approval.
4. Pilot’s Guide
The KLN 90B pilots’ guide must be placed in the aircraft in a location that is accessible to
the pilot. The pilot’s guide is P/N 006-08773-0000 and the abbreviated pilot’s guide is
P/N 006-08774-0000.
1.9 INSTRUCTIONS FOR CONTINUED AIR WORTHINESS
The instructions for continued air worthiness given in the TC or STC approvals for this product
supplements or supercedes the instructions for continued air worthiness in this manual.
Most Honeywell products are designed and manufactured to allow “on condition maintenance”. On condition maintenance is described as follows; There are no periodic service requirements necessary to maintain continued air worthiness. No maintenance is required until
the equipment does not properly perform the intended function. When service is required, a
complete performance test should be accomplished following any repair action. Consult the
appropriate Unit Maintenance/Overhaul Manual for complete performance test information.
Rev 5, April/200310521I05.TDCPage 1-21
BENDIX/KINGKLN 90B
Page 1-2210521I05.TDCRev 5, April/2003
BENDIX/KINGKLN 90B
SECTION II
INSTALLATION
2.1 GENERAL INFORMATION
This section contains general suggestions and information to consider before installation of the
KLN 90B GPS RNAV. Close adherence to these suggestions will assure optimum performance
from the equipment.
The conditions and tests required for TSO approval of this article are minimum performance standards. It is the responsibility of those desiring to install this article either on or within a specific type
or class of aircraft to determine that the aircraft installation conditions are within TSO standards.
The article may be installed only if further evaluation by the applicant documents an acceptable
installation and is approved by the Administrator.
2.2 UNPACKING AND INSPECTING EQUIPMENT
Exercise extreme care when unpacking the equipment. Make a visual inspection of the unit for
evidence of damage incurred during shipment. If a claim for damage is to be made, save the shipping container to substantiate the claim. The claim should be promptly filed with the transportation
company. It would be advisable to retain the container and packaging material after all equipment
has been removed in the event that equipment storage or reshipment should become necessary.
2.3 EQUIPMENT INSTALLATION
2.3.1 AVIONICS COOLING REQUIREMENTS FOR PANEL MOUNTED EQUIPMENT
The greatest single contributor to increased reliability of all modern day avionics is to limit the maximum operating temperature of the individual units whether panel mounted or remote mounted.
While modern day individual circuit designs consume much less electrical energy, watts per cubic
inch dissipated within the avionics unit remains much the same due to the high density packaging
techniques utilized. Consequently, the importance of providing cooling to the avionics stack is still
with us today.
While each individual unit may or may not require forced air cooling, the combined heat load of
several units operating in a typical avionics location will significantly degrade the reliability of the
avionics if provisions for cooling are not incorporated in the initial installation. Failure to provide
cooling to the equipment will lead to increased avionics maintenance costs and may also void the
Honeywell warranty.
In the case of the KLN 90B, installation of a KA 33, (P/N 071-4037-XX), or equivalent cooling system is required. Ram air cooling is not acceptable. For installation information on the KA 33 refer
to the KA 33 installation manual, P/N 006-01069-XXXX or Installation Bulletin 258.
2.3.2 KLN 90B MECHANICAL INSTALLATION
The KLN 90B installation will conform to standards designated by the customer, installing agency,
and existing conditions as to the unit location and type of installation. However, the following suggestions will assure a more satisfactory performance from the equipment.
A. Plan a location on the aircraft panel so that the KLN 90B is plainly visible to the
pilot and so that he has complete access to all front panel controls. Check to be
sure that there is adequate depth behind the panel for the mounting rack and all
the connectors and cabling. Be sure that the mounting location is not close to
heater vents or other sources of high heat.
B. Refer to figure 2-3 for the panel cutout dimensions. Mark and cut the panel open-
ing.
Rev 5, April/200310521I05.TDCPage 2-1
BENDIX/KINGKLN 90B
2.3.3 ANTENNA SELECTION
The KA 91 and KA 92 GPS active antennas, P/N 071-01545-0200 and 071-01553-0200 respectively, are the designated antennas for the KLN 90B.
2.3.4 ANTENNA INSTALLATION CONSIDERATIONS
The antenna should be mounted on top of the fuselage near the cockpit. Avoid mounting the antenna near any projections, the propeller, and the T-tail of the aircraft, where shadows could occur.
It is recommended that there be a separation of at least 3 ft. between the KLN 90B GPS antenna
and any VHF Comm antenna on the aircraft. Antenna baseplate must be level within 5° in both
axes when the aircraft is in level flight. If the antenna is tilted more than 5° or is mounted close to
other objects that shadow it, loss of some of the satellites will occur and system performance may
be degraded. Antenna cable and connector information, including vendor information, is listed below. Refer to figure 2-10 (TNC) and figure 2-11 (BMA) for cable/connector assembly instructions
for the 0 to 40 feet category using RG 400/U or RG 142B/U. Refer to figure 2-12 (for both TNC
and BMA) for the 0 to 80 feet and 0 to 100 feet categories.
NOTE
KA 91/92 nominal gain and noise figures are 26.5 dB
and 2.3 dB respectively. With 0.050 ice on radome,
gain will not decrease by more than 2.0 dB when
viewing a satellite from 30° above the horizon to ze-
nith, as compared to a no ice condition.
CABLE
Length
0 to 40 ft.024-00002-0000
0 to 40 ft.024-00051-0060
0 to 80 ft.024-00072-0000
0 to 100
ft.
CABLE PART NUM-
BER
RG142B/U
RG400/U
ECS 311601
024-00071-0000
ECS 311201
BMA CONNECTORTNC CONNECTORMAX. Allowable
Loss (dB)
030-00101-0002
TED Mfg. 9-30-10
030-00101-0002
TED Mfg. 9-30-10
030-00452-0000
TED Mfg. 9-30-26
030-00452-0001
TED Mfg. 9-30-25
030-00134-0000
TED Mfg. 5-10-30
030-00134-0000
TED Mfg. 5-10-30
030-00108-0002
TED Mfg. 5-10-307
030-00108-0003
TED Mfg. 5-10-306
8.0
8.0
8.0
8.0
100 to 165 ft. Contact TED, ECS or PIC for complete cable/connector assembly.
NOTE
A right angle antenna connector is available from
Honeywell (P/N 030-00134-0001) or from TED.
TED Manufacturing Corp. Electronic Cable Specialists (ECS)PIC Wire and Cable
11415 Johnson Drive 11227 W. Forest Home Avenue N63 W 22619 Main Street
Shawnee, Kansas 66203 Franklin, Wisconsin 53132 P.O. Box 330
Tel: (913) 631-6211 Tel: (800) ECS-WIRE Sussex, Wisconsin 53089
or (414) 421-5300 Tel: (800) 742-3191
or (414) 246-0500
Page 2-210521I05.TDCRev 5, April/2003
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