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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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06/28/19

Message Overview:

Fault Message:

RAT GCU FAILED

Fault Code:

2460490DCP

Associated CAS:

ELEC SYS FAIL
(Caution)

Reporting LRU: DC Power Center (DCPC)
System Description: 24-23-00
Schematic Diagram: 24-23-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 24-23-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

DC Power Center (DCPC) detected a Ram-Air-Turbine Generator Control Unit (RAT GCU) internal failure.

Possible Causes:

  • Ram-Air-Turbine Generator Control Unit (RAT GCU) (A191)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin:

  • AW700T-0055 - DC BUS 2 shedding while performing 24 months Operational Test of the Ram Air Turbine (RAT)
  • AW700T -0110 Rev2 - Incorrect Installation of Ram Air Turbine - Generator Control Unit Connector EMI Filters

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Operational Test of the Ram Air Turbine (RAT) AMM 24-23-01-710-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Ram-Air-Turbine Generator Control Unit (RAT GCU) AMM 24-23-05-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Ram-Air-Turbine Generator Control Unit (RAT GCU) AMM 24-23-05-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Perform ground check portion of AMM 24-23-01-710-01 ops test of RAT.

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

  2. Replace RAT GCU.

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

  3. Perform wiring checks between RAT GCU, RAT GEN, DCPC, and SPDA 1.

    1. If wiring checks are not good, repair defective wiring as required and do close out.
    2. If wiring checks are good, continue with next step.

  4. Replace DCPC.
  5. Do close out.

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