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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

03/22/21

Message Overview:

Message Name:

INSTALLED

Message Code:

B3-006975

Associated CAS:

None

Reporting LRU: IRS 1
System Description: 34-45-00
Schematic Diagram: 34-45-00
Wiring Diagram: 34-45-01
34-45-05
34-45-13

Message Description:

None

Possible Causes:

  • Internal Reference Unit (IRU) No. 1 (A233)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Fault Confirmation Procedure:

  1. LRU = IRS1 IRS 1
  2. ATA Chapter = 34-45
  3. Comp Id = .
  4. Message = INSTALLED
  5. {Term Definitions}

    1. OPT1-44 XX 360 NA EXCT CSU WD-05 XXXX-XXXX XTXX-XXXT 09,15: IRS 1 STRAP

Quick Links:

Removal of the Inertial Reference Unit (IRU) AMM 31-45-01-000-801
Installation of the Inertial Reference Unit (IRU) AMM 31-45-01-400-801
Removal of the Global Positioning Receiver AMM 34-55-01-000-801
Installation of the Global Positioning Receiver AMM 34-55-01-400-801
Standard Practices - Replace Wiring SPM 20-12-00-02
Standard Practices - Repair Wiring SPM 20-12-10-02

Troubleshooting Recommendations:

  1. None

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