Lynx NGT-9000s
Installation Manual
Table 4-2: System Status Messages
SYMPTOM CAUSE/CORRECTIVE ACTIONS
ADS-B In – External Fail
The message is seen if any of the following tests fail:
• GPS Antenna/Cable
• Altimeter – Gilham Altitude Input
• Altimeter – RS-232 Input
• Altimeter – ARINC 429 Input
1. A reboot may clear the failure. Tap the Restart screen
button to perform a warm startup.
2. Incorrect configuration options have been selected.
3. If the problem continues check the interface devices
listed above for possible errors.
4. If the problem continues, replacement of the interface
device may be required. Contact L-3 Field Service
before removal.
ADS-B In – Fail
The message is seen if any of the following tests fail:
• GPS Sensor (antenna)
• Bus Monitor
1. Try clearing the failure performing a warm startup by
tapping the Restart button.
2. Check GPS equipment for errors.
3. If the problem continues, replacement of the unit or
GPS antenna may be required. Contact L-3 Field
Service before removal.
ADS-B In – Degraded
The message is seen if any of the following signals are
failed:
• 1090 ADS-B In Receiver.
• GPS Signal still searching.
• UAT In
• AHRS - ARINC 429 Input Bus
1. Wait 2 minutes for the GPS signal to acquire.
2. Move aircraft in area where the GPS signal is not
being blocked.
3. Cycle power to the unit to try clearing the failure.
4. If the problem continues check the interface devices
listed above for possible errors.
5. If the problem continues, replacement of the unit or
the listed input device may be required. Contact L-3
Field Service before removal.
ADS-B Out – External Fail
The message is seen if the follow test fails:
• GPS Antenna/Cable
1. Try clearing the failure performing a warm startup by
tapping the Restart button.
2. If the problem continues, check the GPS equipment
for errors. Contact L-3 Field Service before removal.
Page 4-10 Maintenance 0040-17001-01
January 15, 2015 Revision A
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