Removal of the Landing Light

TASK 33-42-11-000-001-A
Removal of the Landing Light

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.

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.

WARNING: MAKE SURE THAT THERE ARE NO SIGNS OF FUEL CONTAMINATION IN THE LANDING LIGHT ASSEMBLY. IF YOU FIND FUEL CONTAMINATION, NO PERSON MUST OPERATE THE LANDING LIGHT UNTIL:

YOU REPAIR THE FUEL LEAK
YOU REPLACE THE LANDING LIGHT ASSEMBLY.

IF YOU DO NOT OBEY THIS PRECAUTION, IGNITION OF THE REMAINING FUEL IN THE LANDING LIGHT CAN OCCUR.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

CAUTION: WHEN YOU REPLACE A LANDING LIGHT LAMP, EXAMINE THE APPLICABLE LANDING LIGHT ASSEMBLY FOR SIGNS OF FUEL CONTAMINATION. IF YOU FIND FUEL CONTAMINATION, EXAMINE THE ITEMS THAT FOLLOW FOR SIGNS OF FUEL LEAKAGE:

THE FUEL PUMP(S) 21QA(26QA) OR 25QA(22QA)
THE WATER DRAIN VALVE 25QM(26QM) DIRECTLY FORWARD OF THE LANDING LIGHT ASSEMBLY.

REFER TO AMM 28-11-00-06 FOR LEAKAGE LIMITS AND REPAIR AS NECESSARY. IF YOU DO NOT REPAIR THE LEAK, NO PERSONS MUST OPERATE THE APPLICABLE LANDING LIGHT UNTIL:

THE LEAK IS REPAIRED
THE LANDING LIGHT ASSEMBLY IS REPLACED.

FIN: 7LB
FIN: 8LB

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)

B. Referenced Information

REFERENCE	DESIGNATION
TASK 28-11-00-280-002-A	Structural Fuel Tank Leaks - General Information
TASK 28-11-41-000-003-A	Removal of the Water Drain Valve
TASK 28-21-51-000-001-A	Removal of the Fuel Pumps
Landing Light 7LB (8LB)

3. Job Set-up
Subtask 33-42-11-941-052-A

A. Safety Precautions
(1) Put the SAFETY BARRIER(S) in position.
(2) Put a WARNING NOTICE(S) in the cockpit to tell persons not to operate the landing lights.

Subtask 33-42-11-865-050-A

B. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
122VU	LIGHTING/LANDING LT/R/CTL	4LB	T07
122VU	LIGHTING/LANDING LT/R/SPLY	2LB	T06
122VU	LIGHTING/LANDING LT/L/CTL	3LB	T05
122VU	LIGHTING/LANDING LT/L/SPLY	1LB	T04

Subtask 33-42-11-010-050-A

C. Get Access
(1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position as applicable:
(a) FOR [7LB] (LT-LANDING, L)
below zone 571
(b) FOR [8LB] (LT-LANDING, R)
below zone 671.

4. Procedure
Subtask 33-42-11-210-058-A

A. Examine the Landing Light Assembly for Fuel Contamination
(1) Examine the landing light assembly for signs of fuel contamination.
(2) If you find fuel contamination, examine the items that follow for fuel leakage:

the fuel pumps 21QA(26QA) and 25QA(22QA) (Ref. AMM TASK 28-21-51-000-001)
the water drain valve 25QM(26QM) (Ref. AMM TASK 28-11-41-000-003)
the wing tank structure (Ref. AMM TASK 28-11-00-280-002).

Repair the leak(s) as necessary.

Subtask 33-42-11-020-050-A

B. Removal of the Landing Light
(1) Disconnect the electrical connector (4) from the light assembly (1).
(2) Put a blanking cap on the disconnected electrical connector.
(3) Remove the screws (2).
(4) Remove the light assembly (1).

[Rev.10 from 2021] 2026.04.01 04:01:42 UTC