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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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02/23/21

Message Overview:

Message Name:

INTERNAL FAULT

Message Code:

B3-008076

Associated CAS:

None

Reporting LRU: VHF 1
System Description: 23-11-00
Schematic Diagram: 23-11-00
Wiring Diagram: 23-11-01

Message Description:

Internal failure reported by left VHF.

Possible Causes:

  • Left VHF Communication Unit (VHF 1) (A7)

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of the VHF Communication Unit AMM 23-11-01-000-801
Installation of the VHF Communication Unit AMM 23-11-01-400-801

Troubleshooting Recommendations:

  1. Reset COM 1 Circuit Breaker CB1-B2. Is the fault message still present?

    1. If YES, continue with next step.
    2. If NO, do close out.

  2. Swap left VHF (A7) with right VHF (A8). Is the fault message still present?

    1. If YES, continue with next step.
    2. If NO, replace defective VHF.

  3. Do close out.

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