background
x
loader
Troubleshooting
arrow By ATA By Message Color By Observed Faults By CAIMS By 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

06/18/19

Message Overview:

Fault Message:

APUGCU [OC FET DRIVE]

Fault Code:

2420129LPS

Associated CAS:

None

Reporting LRU: Generator Control Unit (GCU) 1
System Description: 24-21-00
Schematic Diagram: 24-21-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 24-21-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

The APU Generator Control Unit (GCU) has detected an internal over-current field-effect-transistor (OC FET) / drive failure and consequently resulting in APU generator being disconnected from the busses causing the ACPC to reconfigure the AC bus power sources. The possible loss of the AC bus power with the appropriate AC bus fail message posted on CAS. Inhibited during Take Off and Landing.

Possible Causes:

  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

None

Troubleshooting Recommendations:

  1. None

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