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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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08/08/19

Message Overview:

Fault Message:

LDG GR CTRL HDL/WRG-INPUTS DISAGREE

Fault Code:

3230273EL

Associated CAS:

GEAR SYS FAIL
(Caution)

Reporting LRU: Landing Gear Electronic Control Unit (LG ECU)
System Description: 32-32-00
Schematic Diagram: 32-31-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 32-31-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

The Landing Gear Handle Switches has been detected in disagree condition by the Landing Gear Electronic Control Unit (LG ECU).

Possible Causes:

  • Landing Gear Control Handle A2(S3)
  • Landing Gear Electronic Control Unit (LG ECU) (A52)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of the Landing-Gear Control Panel AMM 32-31-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Landing-Gear Control Panel AMM 32-31-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Landing-Gear Control Handle AMM 32-31-05-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Landing-Gear Control Handle AMM 32-31-05-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Landing-Gear Electronic
Control-Unit (LG ECU)		 AMM 32-31-09-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Landing-Gear Electronic
Control-Unit (LG ECU)		 AMM 32-31-09-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Re-seat LGECU.

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

  2. Perform wiring checks of the Extend/Retract Command wires between LGECU (A52BP1) and Landing Gear Handle including the Gear Handle grounds.

    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.

  3. Perform continuity check of the Landing Gear Handle switches.

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

    • EXT command=Continuity when Handle is down and no continuity with handle up
    • RET command=Continuity when Handle is up and no continuity with handle down

  4. Replace Landing gear control handle.

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

  5. Replace LGECU.
  6. Do close out.

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