L/G - SYS DISAGREE and MLG L Amber XX Shown, Aircraft on Ground, or a System Unusual Ground/Flight Condition or Indication

TASK 32-31-00-810-887-A
L/G - SYS DISAGREE and MLG L Amber XX Shown, Aircraft on Ground, or a System Unusual Ground/Flight Condition or Indication

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.

1. Possible Causes

CARGO LOAD.AREA LIGHT [11LU]
CARGO LOAD.AREA LIGHT [12LU]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TSM TASK 32-31-00-810-837-A	L/G or L/G Door Uplock TGT POS Fault (sensors 8GA thru 13GA and 26GA thru 31GA)
TSM TASK 32-31-00-810-896-A	L/G Downlock Proximity Sensor TGT POS Fault (sensors 14GA thru 19GA)
AMM 33-34-12-000-001	Removal of the Loading-Area Light
AMM 33-34-12-400-001	Installation of the Loading-Area Light

3. Fault Confirmation
Subtask 32-31-00-710-076-A ** ON A/C NOT FOR ALL

A. Test
(1) If this fault has occurred in flight or on the ground and the area loading lights (11LU) and (12LU) were set to on:
(a) Do the fault isolation in Para. 4. B. (1).
(2) If this fault has occurred in flight, and the cargo area loading lights were not set to on:
(a) Do the fault isolation in Para. 4. B. (2).

NOTE: This fault can be caused by the new technology LED Cargo Area Loading Lights (11LU) and (12LU).

4. Fault Isolation
Subtask 32-31-00-865-064-A ** ON A/C NOT FOR ALL

A. Table of the circuit breakers used in this procedure:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
2000VU	LIGHT-LDG-AREA	3LU	J08

Subtask 32-31-00-810-149-A ** ON A/C NOT FOR ALL

B. Procedure
(1) Open and tag the C/B 3LU.
(a) Do a check of the ECAM to make sure that the WARNING L/G - SYS DISAGREE is not shown, or the unusual ground/flight condition has gone.
(2) If the WARNING L/G - SYS DISAGREE is shown, or the unusual ground/flight condition has not gone:
(a) Do the applicable L/G Proximity Sensor TGT POS Fault procedure:

For a L/G or L/G Door Uplock TGT POS Fault, do (Ref. TSM TASK 32-31-00-810-837)
For a L/G Downlock Proximity Sensor TGT POS Fault, do (Ref. TSM TASK 32-31-00-810-896).

(b) If there is no SYSTEM DISAGREE message, identify the defective L/G proximity sensor with data from the systen that has the defect, Ref. P Block 301 Para. 3.
(3) If the WARNING L/G - SYS DISAGREE is not shown, or the unusual ground/flight condition has gone.
(a) Replace the CARGO LOAD.AREA LIGHT [11LU] and CARGO LOAD.AREA LIGHT [12LU] , AMM 33-34-12-000-001 and AMM 33-34-12-400-001.
(4) Make sure that the WARNING L/G - SYS DISAGREE does not show on the ECAM, or that the unusual ground/flight condition has gone.

[Rev.8 from Aug 2018] 2026.04.04 04:31:26 UTC