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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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For AOG assistance contact:

CRC Montreal (YUL)
Quick Links

04/02/21

Message Overview:

Message Name:

INSTALLED

Message Code:

B3-648425

Associated CAS:

None

Reporting LRU: L AHRC;MLGWOW
System Description: None
Schematic Diagram: None
Wiring Diagram: None

Message Description:

L-AHC Prerequiste.

Possible Causes:

  • Attitude Heading Computer 1 (AHC) (A11)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Fault Confirmation Procedure:

  1. Message# = 0
  2. {Term Definitions}

    1. OPT1-40 XX 360 NA EXCT CSU WD-05 XXXX-XXXX XFXX-XXXT 09,15: AHC 1 STRAP

Quick Links:

Standard Practices - Replace Wiring SPM 20-12-00-02
Standard Practices - Repair Wiring SPM 20-12-10-02

Troubleshooting Recommendations:

  1. L-AHC Prerequiste.

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