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

05/06/21

Message Overview:

Message Name:

FAULT

Message Code:

B3-007768

Associated CAS:

ELECTRICAL FAULT
(Caution)

R GEN FAIL
(Caution)

Reporting LRU: R GEN LINE CNTOR
System Description: 24-31-00
24-61-00
Schematic Diagram: 24-31-00
24-61-00
Wiring Diagram: 24-31-07
24-61-03

Message Description:

The Right Generator Line Contactor (RGLC) has failed.

Possible Causes:

  • Right Generator Line Contactor (RGLC) (K70)
  • Right Generator Control Unit (GCU) - Primary (RGCU) (PCB6)
  • Right DC Power Center (RDCPC) (A36)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin:

  • AW300-24-0137 - Y06 Electrical System Upgrade
  • AW300-24-0162 - Service Bulletin 100-24-20 - DC Power Center (DCPC) System - Inspection and Replacement of Internal Fuses in the L/H and R/H DC Power Center (DCPC)

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of Generator Control Unit (GCU) - Primary AMM 24-31-13-000-801
Installation of Generator Control Unit (GCU) - Primary AMM 24-31-13-400-801
Removal of DC Power Center (DCPC) AMM 24-61-01-000-801
Installation of DC Power Center (DCPC) AMM 24-61-01-400-801
Removal of the Generator Line Contactor AMM 24-61-09-000-801
Installation of the Generator Line Contactor AMM 24-61-09-400-801
Standard Practices - Replace Wiring SPM 20-12-00-02
Standard Practices - Wire Repair SPM 20-12-10-02

Troubleshooting Recommendations:

  1. Disconnect the Right Generator Line Contactor (K70) connector located in the Right DC Power Center (A36). Do visual inspection of the connector and associated wiring for any loose pins and/or damaged wire.

    1. If inspection is satisfying, continue with next step.
    2. If inspection is not satisfying, go to step 5.

  2. Verify Right Generator Line Contactor (K70) coils by measuring the resistances at the contactor connector (J-side) as per the following table:

    Coils Expected Values Results
    Pin 1 and Pin 2 (Pick-up) between 4.5Ω and 6.5Ω
    Pin 2 and Pin 3 (Hold) between 260Ω and 280Ω

    1. If the verification is satisfying, continue with next step.
    2. If the verification is not satisfying, replace the defective Generator Line Contactor.
      NOTE: It is important to not skip this verification before proceeding with the interchange at step 3. A short of one of the 2 coils will result with a blowing of a fuse on the corresponding Generator Control Unit.

  3. Interchange the Right Generator Line Contactor (K70) with the Left Generator Line Contactor (K69). Is the fault message still present?

    1. If YES, continue with next step.
    2. If NO, replace the defective Generator Line Contactor.

  4. Interchange the Right Generator Control Unit (PCB6) with the Left Generator Control Unit (PCB5). Is the fault message still present?

    1. If YES, continue with next step.
    2. If NO, replace the defective Generator Control Unit.

  5. Replace Right DC Power Center (A36).
  6. Do close out.

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