L/G Uplock Locked When L/G is Locked Down

TASK 32-31-00-810-875-A
L/G Uplock Locked When L/G is Locked Down

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 32-31-21-000-001	Removal of the NLG Uplock Assy
AMM 32-31-21-400-001	Installation of the NLG Uplock Assy
AMM 32-31-44-000-001	Removal of the MLG Uplock Assembly
AMM 32-31-44-400-001	Installation of the MLG Uplock Assembly
AMM 32-33-00-710-001	Operational Check of Free-Fall Mechanical Control

3. Fault Confirmation
Subtask 32-31-00-710-068-A

A. Test
(1) Use the procedure given in the operational test that follows to open (unlock) the applicable uplock AMM 32-33-00-710-001.

4. Fault Isolation
Subtask 32-31-00-810-134-A

A. Procedure
(1) If the uplock stays shut, replace the applicable Uplock Assembly :

for the NLG Uplock Assembly (2530GM) AMM 32-31-21-000-001 and AMM 32-31-21-400-001.
for the MLG Uplock Assembly (2509GM) or (2510GM) AMM 32-31-44-000-001 and AMM 32-31-44-400-001.

[Rev.8 from Aug 2018] 2026.04.04 04:31:25 UTC