DOC AIRBUS | TSM A320FMLG (RH) Does Not Uplock
TASK 32-31-00-810-867-A
MLG (RH) Does Not Uplock
A. Referenced Information
3. Fault Confirmation
Subtask 32-31-00-860-099-A
Subtask 32-31-00-810-125-A
[Rev.8 from Aug 2018]
2026.04.04 04:31:25 UTC
MLG (RH) Does Not Uplock
WARNING:
MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. MOVEMENT OF THE LANDING GEAR CAN CAUSE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.
WARNING:
PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
1. Possible Causes- THE FLIGHT CONTROLS
- THE FLIGHT CONTROL SURFACES
- THE LANDING GEAR AND THE RELATED DOORS
- COMPONENTS THAT MOVE.
- UPLOCK ASSY-MLG, R [2510GM]
- proximity sensors and targets
- grease contamination of the uplock proximity sensors and targets
MLG (RH) lockstay assembly MLG (RH) uplocks - ACTG CYL-MLG, R [2504GM]
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| TSM TASK 32-31-00-810-846-A | L/G Failure of one of the uplock proximity sensors 8GA thru 13GA |
| AMM 32-11-00-200-001 | General Visual Inspection of the Main Landing Gear |
| AMM 32-11-00-220-003 | Detailed Dimensional Check of the MLG Lockstay Assembly |
| AMM 32-31-00-200-001 | Detailed Inspection of Gear Uplock and Door Uplock Units and Rollers |
| AMM 32-31-00-720-002 | Functional Test of the Normal Extension and Retraction of the Landing Gear |
| AMM 32-31-46-000-001 | Removal of the MLG Actuating Cylinder |
| AMM 32-31-46-400-001 | Installation of the MLG Actuating Cylinder |
Subtask 32-31-00-860-099-A
A. Procedure
(1) Do a check of the post flight report. If there is a SYS DISAGREE ECAM message and related MLG (RH) uplock target-position CFDS message, do the Fault Isolation procedure
4. Fault Isolation(1) Do a check of the post flight report. If there is a SYS DISAGREE ECAM message and related MLG (RH) uplock target-position CFDS message, do the Fault Isolation procedure
Subtask 32-31-00-810-125-A
A. Procedure
(2) Do a check of the UPLOCK ASSY-MLG, R [2510GM] proximity sensors and targets (Ref. TSM TASK 32-31-00-810-846).
(a) If the indications are not correct during the check, do the following:
1 Do a check for grease contamination of the uplock proximity sensors and targets .
2 If there is too much grease in the area, clean off the grease and do the check in Para. 4.A. again.
MLG (RH) lockstay assembly AMM 32-11-00-220-003.
(4) Do the detailed inspection of theMLG (RH) uplocks AMM 32-31-00-200-001.
(5) Correct all faults found.
(6) Do the functional test of the normal extension and retraction of the landing gear AMM 32-31-00-720-002.
(7) If the fault continues, the MLG (RH) is slow to operate or the fault continues after the subsequent flight, replace the ACTG CYL-MLG, R [2504GM] AMM 32-31-46-000-001 AMM 32-31-46-400-001.
NOTE: The procedure that follows, gives the information necessary to identify mechanical faults related to the MLG (RH).
(1) Do the inspection/check of the main gear (RH) AMM 32-11-00-200-001. (2) Do a check of the UPLOCK ASSY-MLG, R [2510GM] proximity sensors and targets (Ref. TSM TASK 32-31-00-810-846).
(a) If the indications are not correct during the check, do the following:
1 Do a check for grease contamination of the uplock proximity sensors and targets .
2 If there is too much grease in the area, clean off the grease and do the check in Para. 4.A. again.
NOTE: Grease contamination can cause incorrect indications.
(3) Do the detailed dimensional check of the (4) Do the detailed inspection of the
(5) Correct all faults found.
(6) Do the functional test of the normal extension and retraction of the landing gear AMM 32-31-00-720-002.
(7) If the fault continues, the MLG (RH) is slow to operate or the fault continues after the subsequent flight, replace the ACTG CYL-MLG, R [2504GM] AMM 32-31-46-000-001 AMM 32-31-46-400-001.