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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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For AOG assistance contact:

CRC Montreal (YUL)
Quick Links

03/25/21

Message Overview:

Message Name:

INTERNAL FAULT

Message Code:

B3-007670

Associated CAS:

None

Reporting LRU: RAD ALT 4000
System Description: 34-44-00
Schematic Diagram: 34-44-00
Wiring Diagram: 34-44-01

Message Description:

An internal fault is detected.

Possible Causes:

  • Radio Altimeter Transceiver (RAD ALT 4000) (A32)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Operational Test of the Radio Altimeter System AMM 34-44-00-710-801
Removal of the Radio Altimeter Transceiver AMM 34-44-01-000-801
Installation of the Radio Altimeter Transceiver AMM 34-44-01-400-801
Removal of the Radio Altimeter Antenna AMM 34-44-09-000-801
Installation of the Radio Altimeter Antenna AMM 34-44-09-400-801
Standard Practices - Replace Wiring SPM 20-12-00-02
Standard Practices - Repair Wiring SPM 20-12-10-02
Electrical Connectors - Maintenance Practice SPM 20-20-00-02

Troubleshooting Recommendations:

  1. Replace Radio Altimeter Transceiver.
  2. Do close out.
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