Replacement of the Lamp of the Wing and Engine Scan Light

TASK 33-49-11-960-001-A
Replacement of the Lamp of the Wing and Engine Scan Light

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

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

CAUTION: DO NOT TOUCH THE LAMP GLASS WITH YOUR FINGERS. THE OILS FROM YOUR SKIN WILL QUICKLY CAUSE DETERIORATION OF THE LAMP. IF YOU ACCIDENTALLY TOUCH THE LAMP GLASS, CLEAN IT WITH A LINT-FREE CLOTH.

NOTE: This procedure is only applicable for halogen-bulb and incandescent wing and engine scan lights.

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 5M (16 FT)- ADJUSTABLE
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Referenced Information

REFERENCE	DESIGNATION
TASK 33-49-00-710-001-A	Operational Test of the Wing and Engine Scan Lights
Lamp of the Wing and Engine Scan Light (Honeywell)
Lamp of the wing and engine scan light (Zodiac)

3. Job Set-up
Subtask 33-49-11-865-059-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 33-49-11-010-050-A

B. Get Access
(1) Put the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE in position at zone 230.

4. Procedure
Subtask 33-49-11-020-052-A

A. Removal of the Lamp (Honeywell)

Lamp of the Wing and Engine Scan Light (Honeywell)

(1) Remove the four screw (2) from the lens assembly (1).
(2) Remove the lens assembly (1) away from the housing (7).
(3) Remove the screw (11), the washers (10) and the nut (9). Release the terminal (3) from the lens assembly (1).
(4) Remove the two screws (4) from the retainer (5).
(5) Remove the retainer (5).
(6) Pull the lamp (8) away from the housing (7) and disconnect the two electrical terminals (6).
(7) Remove the lamp (8).

Subtask 33-49-11-420-053-A

B. Installation of the Lamp (Honeywell)

Lamp of the Wing and Engine Scan Light (Honeywell)

(1) Connect the electrical terminals (6) to the new lamp (8) and install it in the position in its housing (7). Hold it in this position.
(2) Put the retainer (5) in position.
(3) Attach the assembly. To do this, tighten the screws (4).
(4) Attach the terminal (3) to the lens assembly (1) with the nut (9), the washers (10) and the screw (11).
(5) Install the lens assembly (1) in the position on the housing (7).
(6) Attach the assembly. To do this, tighten the screws (2).

Subtask 33-49-11-020-054-A

C. Removal of the Lamp (Zodiac)

Lamp of the wing and engine scan light (Zodiac)

(1) Loosen the four fasteners (3).
(2) Carefully remove the lamp assembly (2).
(3) Hold the lamp assembly (2).
(4) Remove the three screws (7) and washers (6).
(5) Remove the lamp holder (5) from the lamp assembly (2).
(6) Remove the lamp (4) from the lamp holder (5).

Subtask 33-49-11-420-055-A

D. Installation of the Lamp (Zodiac)

Lamp of the wing and engine scan light (Zodiac)

(1) Install a new lamp (4) on the lamp holder (5).
(2) Hold the lamp assembly (2).
(3) Carefully, put the lamp holder (5) in position on the lamp assembly (2).
(4) Install the three washers (6) and screws (7).
(5) Put the lamp assembly (2) in position.

NOTE: Manually adjust the optical support of the lamp to the center. Use a shim and make sure that the peripheral gap between the lamp assembly (2) and the lamp housing assembly (1) is 0.5 mm minimum.

(6) Tighten the four fasteners (3).

Subtask 33-49-11-865-060-A

E. Remove the safety clip(s) and the tag(s) and close 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 33-49-11-710-053-A

F. Operational Test of the lighting
(1) Do the operational test of the Wing and Engine Scan Lights (Ref. AMM TASK 33-49-00-710-001).

5. Close-up
Subtask 33-49-11-942-054-A

A. Put the aircraft back to its initial configuration.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.01 00:56:57 UTC