Removal of the Wing and Engine Scan Light

TASK 33-49-11-000-001-A
Removal of the Wing and Engine Scan Light

WARNING: WEAR GLASSES AND PROTECTIVE CLOTHING WHEN YOU DO WORK ON THE LIGHT. THE LAMP IS PRESSURIZED AND AN EXPLOSION CAN OCCUR.

WARNING: DO NOT DISCONNECT THE ELECTRICAL CONNECTIONS FOR AT LEAST 2 MINUTES AFTER YOU DE-ENERGIZE THE ELECTRICAL CIRCUITS.

ZONE: 231
ZONE: 232
FIN: 3LX
FIN: 4LX

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 4M (13 FT)-ADJUSTABLE
No specific	AR	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
231	FWD PASSENGER COMPARTMENT
232	FWD PASSENGER COMPARTMENT
FOR [3LX] (LT-WING & ENG SCAN, L)
231KW
FOR [4LX] (LT-WING & ENG SCAN, R)
232KW

C. Referenced Information

REFERENCE	DESIGNATION
Wing and Engine Scan Light

3. Job Set-up
Subtask 33-49-11-865-050-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
FOR FIN: 4LX (LTWING & ENG SCAN, R)
122VU	LIGHTING/EXT LT/WING/AND ENG SCAN/R	1LX	W03
FOR FIN: 3LX (LTWING & ENG SCAN, L)
122VU	LIGHTING/EXT LT/WING/AND ENG SCAN/L	5LX	W02

Subtask 33-49-11-010-051-A

B. Get Access
(1) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position in zone 230.
(2) Remove the sidewall panel in the forward passenger compartment:
(a) FOR [3LX] (LT-WING & ENG SCAN, L)
231KW
(b) FOR [4LX] (LT-WING & ENG SCAN, R)
232KW
(3) Remove the thermal and acoustic insulation in zones 231 and 232.

4. Procedure
Subtask 33-49-11-020-050-A

A. Removal of the Wing and Engine Scan Light
(1) Outside the aircraft:
(a) Loosen the 16 screws (2) which attach the wing and engine scan light (1) to the structure (3) of the aircraft.
(2) Inside the forward passenger compartment:
(a) Disconnect the movable connector (4) from the light (1) and put a CAP - BLANKING on the disconnected connector.
(3) Remove the wing and engine scan light (1).

NOTE: It could be possible that the wing and engine scan lights are not easy to remove. Do not use tools which could damage the aircraft structure.

[Rev.10 from 2021] 2026.04.01 04:02:20 UTC