L/G Selector Lever Deselection

TASK 32-31-00-810-809-A
L/G Selector Lever Deselection

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:

THE FLIGHT CONTROLS
THE FLIGHT CONTROL SURFACES
THE LANDING GEAR AND THE RELATED DOORS
COMPONENTS THAT MOVE.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.

NOTE: GROUND SCANNING is applicable to P/N 664700500A4x LGCIU

GROUND REPORT is applicable to P/N 80-178-xx LGCIU

1. Possible Causes

LGCIU-1 [5GA1]
LGCIU-2 [5GA2]
LEVER-L/G NORM CTL [6GA]
wiring

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 32-31-00-710-002	Operational Test of the Landing Gear Doors (With False Targets)
ASM 323105
ASM 323106
AMM 32-31-11-000-001	Removal of the Landing Gear Normal Control lever
AMM 32-31-11-400-001	Installation of the Landing Gear Normal Control Lever
AMM 32-31-71-000-001	Removal of the LGCIU
AMM 32-31-71-400-001	Installation of the LGCIU

3. Fault Confirmation
Subtask 32-31-00-710-053-A

A. The ECAM and PFR/CFDS messages show a malfunction of the L/G selector circuit, this circuit is not a BITE test subject.
(1) Do the fault isolation.

4. Fault Isolation
Subtask 32-31-00-810-060-A

A. Procedure
(1) Interchange the LGCIU-1 with LGCIU-2 AMM 32-31-71-000-001 and AMM 32-31-71-400-001.
(2) Do the operational test of the L/G doors AMM 32-31-00-710-002.
(a) During the L/G doors operational test, if the fault moves to the LGCIU-2 (1) position, the fault is in LGCIU-1 (2).
(b) If the fault stays in the LGCIU-1 (2) electrical circuit, go to Para. 4.A.(4).
(3) Replace the faulty LGCIU-1 [5GA1] LGCIU-2 [5GA2] . Refer to Para. 4.(1) and (2).
(a) Do a check of the UPPER ECAM and make sure that the fault warning clears.
(b) Do the GROUND SCANNING / REPORT and make sure that the ground log is clear of L/G control lever or LGCIUs fault messages. Print the GROUND SCANNING / REPORT.

NOTE: If the L/G doors have been opened manually by the door ground-control-handle, there will be doors fault messages. Ignore these messages.

(4) During the procedure in Para. 4.(2)(a), if the fault stays in the LGCIU-1 (2) electrical circuit, replace the LEVER-L/G NORM CTL [6GA] AMM 32-31-11-000-001 AMM 32-31-11-400-001.
(5) Do the operational test of the L/G doors AMM 32-31-00-710-002.
(6) If the fault does not clear do a check of the 28Vdc supply from the LEVER-L/G NORM CTL [6GA] to the ARINC tray connecter for LGCIU-1 (2) ASM 323105 ASM 323106.
(7) If there is a circuit fault do a wiring /connector repair and do the operational test of the L/G doors AMM 32-31-00-710-002.
(8) Do the GROUND SCANNING / REPORT and make sure that the ground log contains no new messages. Check the time stamps against the previous GROUND SCANNING / REPORT applicable to the L/G control lever or LGCIUs fault messages.

NOTE: The GROUND SCANNING / REPORT is a non-volatile log that can only be cleared by a signal from the CFDS at engine start.

NOTE: If the L/G doors have been opened manually by the door ground-control-handle, there will be doors fault messages. Ignore these messages.

(9) Do a check of the UPPER ECAM and make sure that the fault warning clears.

5. Close-up
Subtask 32-31-00-942-054-A

A. Remove the ground support and maintenance equipment, the special and standard tools and all other items.

Subtask 32-31-00-860-051-A

B. Put the aircraft back to its initial configuration.

[Rev.8 from Aug 2018] 2026.04.04 04:31:19 UTC