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89000046-014
KSN 780/8XX/900 AeroNav AML STC Installation Manual for Helicopters
Rev 0
Page E-1
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Appendix E: Troubleshooting Guide
Component
Trouble
Probable Cause
Solution
AeroNav XXX
The unit is not getting power to
the main connector
The unit is not getting power.
Check Circuit Breaker
Check wiring and unit seating in
tray
The AeroNav XXX is not
computing a position
Wiring
Check Coaxial Cables
Antenna
Verify antenna has a clear
unobstructed view of the sky
The GPS Signal levels are very
low
Wiring
Check coaxial cable and
connectors
Check routing
Antenna shading
Verify the antenna is mounted
on top of the aircraft
Verify antenna is clear of
hangars, buildings, etc.
Interference
Verify another piece of aircraft
equipment is not interfering with
the GPS system
VHF Com is not transmitting
(Not Applicable for AeroNav
880/780
)
Wiring
Check the helicopter PTT switch
Check Audio Panel (if installed)
Check wiring
The AeroNav XXX is not tuning
the DME
(Not Applicable for AeroNav
880/780
)
Configuration
Verify the AeroNav XXX is
configured correctly.
Wiring
Checking wiring
DME
Verify the DME is configured for
the AeroNav XXX tuning type
RS-232 Device is not
communicating
Configuration
Verify the AeroNav XXX is
configured for the appropriate
device.
Wiring
Check wiring and unit seating in
tray
ARINC 429 is not communicating
Configuration
Verify the AeroNav XXX is
configured for the appropriate
device.
Wiring
Check wiring and unit seating in
tray
Содержание 700-00179-700
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