background
x
loader
Troubleshooting
arrow By ATA By Message Color By Observed Faults by MDCBy Tips

Select color for CAS message that you wish to troubleshoot

(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.

This page includes :

For AOG assistance contact:

CRC Montreal (YUL)
Quick Links

02/26/21

Message Overview:

Message Name:

NO R-FCU-2 BUS TO RDC

Message Code:

B3-006682

Associated CAS:

FLAPS FAULT
(Advisory)

Reporting LRU: FLAP CTRL UNIT
System Description: 27-51-00
Schematic Diagram: 27-52-00
Wiring Diagram: 27-52-33

Message Description:

No Flap Control Unit (FCU) ARINC Signal at Remote Data Concentrator (RDC).

Possible Causes:

  • Flap Control Unit (FCU) (A124)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin:

  • AW300-27-0058 - Flap Control Unit - CAS Messages Reset procedure (20501 to 20999)

Forum Articles/Infoservice/Newsletter: None

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
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 circuit breakers CB1-B13 FLAP L IND, CB1-B14 FLAP CTRL and CB2-B12 FLAP R IND/CTRL.

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

  2. Re-rack FCU.

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

  3. Check the C-FCU-1 bus wiring integrity between FCU and RDC per AWM.

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

  4. If fault remains, replace FCU.
  5. Do close out.

50_flap_component_location

Registered and/or unregistered trademarks of Bombardier Inc. or its subsidiaries. © 2015 Bombardier Inc. All rights reserved.