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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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04/02/21

Message Overview:

Message Name:

NO OUTPUT

Message Code:

B3-648448

Associated CAS:

None

Reporting LRU: AHC 1
System Description: None
Schematic Diagram: None
Wiring Diagram: None

Message Description:

No L-AHC data received at the L-IOC and 3-of (L-FGC, L-PFD, L-MFD, R-PFD, R-MFD).

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# = 2
  2. {Term Definitions}

    1. AHC1-1 1X 350 01 ABSN XXXX-XXXX XXXX-XXXX XXXX-XXXX 350:(A) NO IOC 1X IN;
    2. OPT1-91 XX 360 NA EXCT CSU WD-06 TTTX-XXXX XXXX-XXXX CSU_06:16&15&14; TSS
    3. FGC1-5 1X 071 01 EXCT XXXX-XXXT XXXX-XXXX XXXX-XXXX 071:25;NO L-AHRS-1 BUS INPUT
    4. TTRA-7 1X 350 00 EXCT XXXX-XXXX XXXX-XTXX XXXX-XXXX 350:19;L-AHC-1 BUS INPUT
    5. PFD1-24 1X 351 NA EXCT XXXX-XXXX XXXX-XXXX XXTX-XXXX 351:14;NO L-IRS\AHC-2 INPUT
    6. MFD1-22 1X 351 NA EXCT XXXX-XXXX XXXX-XXXX XXTX-XXXX 351:14;NO L-IRS\AHC-2 INPUT
    7. PFD2-23 2X 351 NA EXCT XXXX-XXXX XXXX-XXXX XXTX-XXXX 351:14;NO L-IRS\AHC-3 INPUT
    8. MFD2-24 2X 351 NA EXCT XXXX-XXXX XXXX-XXXX XXTX-XXXX 351:14;NO L-IRS\AHC-3 INPUT

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 requires replacement or troubleshooting.

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