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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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08/06/19

Message Overview:

Fault Message:

L MAIN-GEAR UPLOCK SENSOR/WRG

Fault Code:

3230127EL

Associated CAS:

GEAR DISAGREE
(Caution)

GEAR SYS FAIL
(Caution)

Reporting LRU: Landing Gear Electronic Control Unit (LGECU)
System Description: 32-61-00
Schematic Diagram: 32-61-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 32-61-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

Left Main Gear Uplock Sensor has been detected failed by Landing Gear Electronic Control Unit (LG ECU).

Possible Causes:

  • Left Main Gear Uplock Sensor (MT24)
  • Landing Gear Electronic Control Unit (LG ECU) (A52)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

NOTE: Check proximity sensor first.

In CAIMS, LRU TEST, LGECU LDG GR UPLOCK SENSOR STATUS page displays the input from the MLG DOOR UPLOCK SENSOR STATE which may be helpful in troubleshooting this message.

Quick Links:

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 ]
Operational Test of the Position Indication System AMM 32-61-00-710-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Main-Gear Uplock Proximity-Sensors AMM 32-61-01-000-804 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Main-Gear Uplock Proximity-Sensors AMM 32-61-01-400-804 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Adjustment of the Main-Gear Uplock Proximity-Sensors AMM 32-61-01-820-804 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Re-rack LGECU.

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

  2. Perform wiring checks between LGECU and Left Main Gear Uplock sensor (MT24).

    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. Replace Left Main Gear Uplock proximity sensor.

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

  4. Replace LGECU.
  5. Do close out.

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