background
x
loader
Troubleshooting
arrow By ATA By Message Color By Observed Faults by MDCBy Tips

Select color for CAS message that you wish to troubleshoot

(WARNING)
RED MESSAGE (CAUTION)
AMBER MESSAGE (ADVISORY)
CYAN MESSAGE (STATUS)
WHITE MESSAGE Require immediate crew attention. These messages are accompanied by flashing master warning, triple chime attenson with or without voice message or dedicated tone. Require immediate crew awareness and future crew action may be required in the form of alternate system selection or performance limitation. These message are accompanied by flashing master caution and a single chime. Indicate safe or normal system operation which require crew awareness, over and above the dark cockpit philosophy. Indicate minor failures or reduction in systems capability, which require no crew action.

This page includes :

For AOG assistance contact:

CRC Montreal (YUL)
Quick Links

04/26/21

Message Overview:

Message Name:

LOSS OF GPS SIGNAL IN FLIGHT

Identifier: 345OBS005
Effectivity: AIRCRAFT 20501 - 20999
System: Navigation
Associated CAS: None
System Description: 34-55-00
Schematic Diagram: 34-55-00
Wiring Diagram: 34-55-03

Message Description:

GPS shows "acquisition mode", but is not able to acquire any satellite signal.

Possible Causes:

  • L Global Positioning Satellite Receiver (GPS 1) (A25)
  • R Global Positioning Satellite Receiver (GPS 2) (A24)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin:

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Operational Test of the Global Positioning System AMM 34-55-00-710-801
Removal of the Global Positioning Receiver AMM 34-55-01-000-801
Installation of the Global Positioning Receiver AMM 34-55-01-400-801
Removal of the Global Positioning Antenna AMM 34-55-09-000-801
Installation of the Global Positioning Antenna AMM 34-55-09-400-801
Wiring - Maintenance Practices - ALL SPM 20-12-00-02
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02
Electrical Connectors - Maintenance Practice - ALL SPM 20-20-00-02

Troubleshooting Recommendations:

  1. None

Registered and/or unregistered trademarks of Bombardier Inc. or its subsidiaries. © 2015 Bombardier Inc. All rights reserved.