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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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08/09/19

Message Overview:

Fault Message:

L MLG DOWNLOCK SENSOR B DISAGREE

Fault Code:

3231136EL

Associated CAS:

GEAR DISAGREE
(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 Downlock Proximity Sensor B has been detected in disagree condition by Landing Gear Electronic Control Unit (LGECU).

Possible Causes:

  • Left Main Gear Downlock B Proximity Sensor (MT30)
  • Landing Gear Electronic Control Unit (LG ECU) (A52)

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

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 Downlock Proximity-Sensors AMM 32-61-01-000-807 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Main-Gear Downlock Proximity-Sensors AMM 32-61-01-400-807 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Adjustment of the Main-Gear Downlock Proximity-Sensors AMM 32-61-01-820-807 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

NOTE: You can confirm the sensor proper operation by using Target or Anti-Target as applicable and monitor the sensor position into CAIMS.

  1. Re-seat LGECU.

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

  2. Perform visual inspection of the Left main gear downlock sensor B installation including the target. Make sure the sensor and target alignment is not mechanically disturbed.
  3. Perform adjustment of Left main gear downlock sensor B.

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

  4. Replace Left main gear downlock sensor B.

    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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