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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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07/24/24

Message Overview:

GEN 1 FAIL
(Advisory)

DDG Reference: 24-8
Pilot Action (QRH): ELEC 04-27
System Description: 24-21-00
Schematic Diagram: [ Global Express ]  [ G5000 ]  [ Global XRS ] SSM 24-21-00-101 - Primary AC Power Supply System - Electrical Schematic
Wiring Diagram: [ Global Express ]  [ G5000 ]  [ Global XRS ] WM 24-24-00/WM 24-24-05 Electrical Control Panel (AP3) - ALL

Message Description:

A failure was detected with Variable Frequency Generator (VFG) 1.

Possible Causes:

  • Generator Control Unit (GCU) 1 (A56)
  • Variable Frequency Generator (VFG) 1 (G1)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin:

  • AW700-24-0303 - Variable Frequency Generator (VFG) - Rotor Diode Failure
  • AW700-24-0305 - Variable Frequency Generator (VFG) - Failures
  • AW700-24-0598 - Variable Frequency Generator (VFG) GL511-1103-9 - Failure
  • AW700-24-0655 - Variable Frequency Generator Harness Low Clearance to Hydraulic/Fuel Lines

Forum Articles/Infoservice/Newsletter:

A GCU patch cable (GSE REF # 24X-24-02) can be used to interchange GCUs 1, 4 and 5 into position 2 or 3 (for troubleshooting only).

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The GCU NVMs can only be downloaded at position #2 or #3.

Quick Links:

Removal of the Main Generator AMM 24-21-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Main Generator AMM 24-21-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Generator Control Units (GCU) AMM 24-24-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Generator Control Units (GCU) AMM 24-24-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair SPM 20-12-10 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Select related CAIMS message below:
  2. If there are no CAIMS messages, make sure a visual inspection is performed. Make sure the Generator shaft is not sheared.
  3. For VFG bearing failure and/or VFG housing rupture, reference AW700-24-0598 and RIL GX-0198, make sure a visual inspection of the engine area surrounding the Generator is performed.
  4. Do close out.

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