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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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Quick Links

01/24/24

Message Overview:

Message Name:

NO R-GP-5 BUS INPUT

Message Code:

B3-006685

Associated CAS:

FLAPS FAULT
(Advisory)

Reporting LRU: FLAP CTRL UNIT
System Description: 27-51-00 - Control And Indication System (Flap)
Schematic Diagram: SSM 27-52-00-101 - Flap System
Wiring Diagram: WM 27-52-33-1_001 - Sheet 1 - Flap Power Unit (FPU) - ALL
WM 31-45-07-1_001 - Sheet 1 - Integrated Avionics Processor System (R-GP-5) - [20501 to 20886, 20888 to 20890, 20896 to 20898]
WM 31-45-07-2_001 - Sheet 1 - Integrated Avionics Processor System (R-GP-5) - [20887, 20891 to 20895, 20899 AND SUBS]

Message Description:

Flap Control Unit (FCU) reports no data from R-GP-5 bus. Check ARINC output from Right Input/Output Concentrator (IOC).

Possible Causes:

  • Integrated Avionics Processor System (IAPS) Card Cage (ICC) (A4)/Right Input-Output Concentrator (IOC)
  • Flap Control Unit (FCU) (A124)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin:

  • AW300-27-0058 - Flap Control Unit - CAS Messages Reset procedure (20003 to 20999)

Forum Articles/Infoservice/Newsletter: None

NOTE:

  • The IOC is a card in the IAPS Card Cage.

Quick Links:

Removal of the Flap Control Unit (FCU) AMM 27-51-05-000-801
Installation of the Flap Control Unit (FCU) AMM 27-51-05-400-801
Operational Test of the Flap Control Unit (FCU) AMM 27-51-05-710-801
Removal of the Input/Output Concentrator Unit (IOC) AMM 31-45-05-000-801
Installation of the Input/Output Concentrator Unit (IOC) AMM 31-45-05-400-801
Operational Test of the Input/Output Concentrator Unit (IOC) AMM 31-45-05-710-801
Wiring - Maintenance Practices - ALL SPM 20-12-00-02
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02
Electrical Connectors - Maintenance Practice - ALL SPM 20-20-00-02

Troubleshooting Recommendations:

  1. Reset the following circuit breakers:

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.

    FLAP R IND CB2-B12
    FLAP L IND CB1-B13
    FLAP CTRL CB1-B14

  2. Reset the FCU by pressing the FCU reset button on the MAINTENANCE TEST control-panel. If unable to reset, engage the Alternate Flaps button with the left hydraulic system pressurized and attempt another reset using the Flap Reset switch on the left galley.

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.

  3. Interchange the IOCs.

    1. If fault follow, replace defective IOC. Do system checks and close out.
    2. If fault remains on left side, continue with next step.

  4. Perform wiring check on R-GP-5 bus integrity between R IOC and FCU per AWM.

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.

  5. Replace FCU (A124).

    1. If system checks are good, continue with next step.

  6. Do close out.

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