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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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Quick Links

06/28/19

Message Overview:

Fault Message:

RAT GCU FAILED K3 / RATLC FAILED

Fault Code:

2460491DCP

Associated CAS:

ELEC SYS FAIL
(Caution)

RAT GEN FAIL
(Caution)

Reporting LRU: Ram-Air-Turbine Generator Control Unit (RAT GCU)
System Description: 24-50-00
Schematic Diagram: 24-23-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 24-23-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

Fault message posted when RAT DEPLOY status from Ram-Air-Turbine Generator Control Unit (RAT GCU) and RAT Line Contactor (RATLC) Status are not in the proper configuration during the initiated RAT TEST.

Possible Causes:

  • Cockpit Circuit Breaker Panel (CCBP) (A35)
  • Ram Air Turbine (RAT) Line Contactor (RATLC) (K3)
  • Ram-Air-Turbine Generator Control Unit (RAT GCU) (A191)
  • Battery/Ram-Air-Turbine Interface (BAT RAT I/F) Card
  • DC Power Center (DCPC) (A63)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

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 ]
Removal of the Cockpit Circuit-Breaker Panel (CCBP)H-Series Contactors AMM 24-52-05-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Cockpit Circuit-Breaker Panel (CCBP)H-Series Contactors AMM 24-52-05-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the DC Power Center (DCPC) AMM 24-61-00-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the DC Power Center (DCPC) AMM 24-61-00-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the DC Power Center (DCPC)Battery/Ram-Air-Turbine Interface Unit AMM 24-61-33-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the DC Power Center (DCPC)Battery/Ram-Air-Turbine Interface Unit AMM 24-61-33-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Make sure the RAT is not deployed. Remove power from the A/C. Disconnect DCPC connector A63P2. Perform a continuity check as follows:

    From To Result
    A63P2-J Ground

    1. If there is no continuity, go to step 3.
    2. If there is continuity, continue with next step.

  2. Access the CCBP K3. Disconnect RATLC K3 contact 12. Perform a continuity check as follows:

    From To Result
    A63P2-J Ground

    1. If there is no continuity, replace RATLC K3 and do close out.
    2. If there is continuity, repair defective wiring as required and continue with next step.

  3. Disconnect RAT GCU connector A191P1. Perform a continuity check as follows:

    From To Result
    A191P1-A Ground
    A191P1-B Ground

    1. If there is continuity, repair defective wiring as required and do close out.
    2. If there is no continuity, continue with next step.

  4. Perform a continuity check as follows:

    From To Result
    K3-12 A63P2-J
    A191P1-A A63P2-M
    A191P1-B A63P2-L

    1. If there is no continuity, repair defective wiring as required and do close out.
    2. If there is continuity, continue with next step.

  5. Perform a continuity check on DCPC as follows:

    From To Result
    A63J2-L Ground

    1. If there is no continuity, go to step 12.
    2. If there is continuity, continue with next step.

  6. Remove BATT/RAT interface card. Perform a continuity check as follows:

    From To Result
    A63J2-M Ground
    A63J2-J Ground

    1. If there is continuity, go to step 12.
    2. If there is no continuity, continue with next step.

  7. Perform a continuity check as follows:

    From To Result
    A63J2-M P410A-8
    A63J2-J P410A-11

    1. If there is no continuity, go to step 12.
    2. If there is continuity, continue with next step.

  8. Disconnect RAT GCU connector A191P1. Perform a continuity check as follows:

    From To Result
    A191P1-b Ground
    A191P1-D Ground

    1. If there is continuity, repair defective wiring as required and do close out.
    2. If there is no continuity, continue with next step.

  9. Perform a continuity check as follows:

    From To Result
    A191P1-b K3-X1
    A191P1-D K3-X2

    1. If there is no continuity, repair defective wiring as required and do close out.
    2. If there is continuity, continue with next step.

  10. Replace BATT/RAT interface card. Is the fault resolved?

    1. If YES, do close out.
    2. If NO, continue with next step.

  11. Replace RAT GCU.

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

  12. Replace DCPC.
  13. Do close out.

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