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(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.

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Quick Links

09/05/19

Message Overview:

Fault Message:

INTERFACE - G/S CANCEL DISC FAIL

Fault Code:

3440120AE

Associated CAS:

GND PROX FAIL
(Advisory)

GPWS SYSTEMS FAIL
(Advisory)

Reporting LRU: Enhanced Ground Proximity Warning System (EGPWS)
System Description: 34-42-00
Schematic Diagram: 34-42-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 34-42-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

Glideslope cancel function does not operate properly.

Possible Causes:

  • Enhanced Ground Proximity Warning System (EGPWS) Computer (A64)
  • Enhanced Ground Proximity Warning System (EGPWS) Control Panel
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter:

Use EGPWS Level 6 Self-Test to monitor each discrete operation.

Quick Links:

Removal of the Enhanced Ground-Proximity
Warning System (EGPWS) Computer		 AMM 34-42-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Enhanced Ground-Proximity
Warning System (EGPWS) Computer		 AMM 34-42-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the EGPWS Control Panel AMM 34-42-05-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the EGPWS Control Panel AMM 34-42-05-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Consult EGPWS - NFF reduction before performing the troubleshooting.
  2. Perform wiring checks between EGPWS control panel and EGPWS Computer.

    1. If wiring checks are not good, repair defective wiring as required and do close out.
    2. If wiring checks are good, continue with next step.

  3. Replace EGPWS control panel.

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.

  4. Replace EGPWS computer.
  5. Do close out.

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