Installation of the Wing and Engine Scan Light

TASK 33-49-11-400-001-A
Installation 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.

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 5M (16 FT)- ADJUSTABLE
No specific	AR	CAP - BLANKING
No specific	AR	SCRAPER - NON METALLIC

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.06AEB2)	Polysulfide Sealant-Low Adhesion Fillet Structure
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. 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

D. Referenced Information

REFERENCE	DESIGNATION
TASK 33-49-00-710-001-A	Operational Test of the Wing and Engine Scan Lights
Wing and Engine Scan Light

3. Job Set-up
Subtask 33-49-11-865-051-A

A. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

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 33-49-11-010-052-A

B. Get Access
(1) Make sure that the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE is in position in zone 230.
(2) Make sure that the sidewall panel is removed in the forward passenger compartment:
(a) FOR [3LX] (LT-WING & ENG SCAN, L)
231KW.
(b) FOR [4LX] (LT-WING & ENG SCAN, R)
232KW.
(3) Make sure that the thermal and acoustic insulation is removed in zone 231/232.

4. Procedure
Subtask 33-49-11-914-050-A

A. Installation of a sealant
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the used sealant from the aircraft structure with a SCRAPER - NON METALLIC.
(4) Clean the aircraft structure with Non Aqueous Cleaner-General - - (Material No.08BAA9) and a Textile-Lint free Cotton - (Material No.14SBA1) .
(5) Install the Polysulfide Sealant-Low Adhesion Fillet Structure (Material No.06AEB2) between the wing and engine scan light (1) and the structure (3) of the aircraft.

Subtask 33-49-11-420-050-A

B. Installation of the Wing and Engine Scan Light
(1) Inside the forward passenger compartment, install the new wing and engine scan light (1).
(2) Remove the CAP - BLANKING and connect the movable connector (4) to the light (1).
(3) Outside the aircraft, tighten the 16 screws (2) which attach the wing and engine scan light (1) to the aircraft structure (3).

Subtask 33-49-11-865-061-A

C. 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 33-49-11-710-050-A

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

5. Close-up
Subtask 33-49-11-410-050-A

A. Close Access
(1) Install the thermal and acoustic insulation in zones 231/232.
(2) Install 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) Make sure that the work area is clean and clear of tools and other items.
(4) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.01 04:02:21 UTC