Removal of the Upper Beacon/Strobe Light from the Outside of the Fuselage

TASK 33-48-11-000-001-A
Removal of the Upper Beacon/Strobe Light from the Outside of the Fuselage

WARNING: ISOLATE THE ELECTRICAL CIRCUITS FROM THE RELATED EQUIPMENT AND THE ENVIRONMENT.

FIN: 7LV

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

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 6M (20 FT)
No specific	AR	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	1	TIE WRAP(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.05RAC1)	Adhesive Film Tape-- Aluminium Foil - Sound damping -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Referenced Information

REFERENCE	DESIGNATION
Upper Beacon/Strobe Light 7LV ** ON A/C NOT FOR ALL
Upper Beacon/Strobe Light 7LV ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 33-48-11-865-050-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
122VU	LIGHTING/EXT LT/BEACON/UPPER	1LV	U06

Subtask 33-48-11-010-055-A

B. Get Access
(1) Make sure that switch 2LV BEACON ON-OFF on overhead panel 25VU is in the OFF position.
(2) Put the ACCESS PLATFORM 6M (20 FT) in position.

4. Procedure
Subtask 33-48-11-020-051-B ** ON A/C NOT FOR ALL

A. Removal of the Upper Anti-Collision (Beacon) Light
(1) Remove the countersunk screws (1) from the lens (2).
(2) Make match marks on the screws (1) and/or their positions to help you with the installation procedure (different screw sizes).
(3) Remove the lens (2) and the seal (3).
(4) Remove the countersunk screws (4) from the LED module (5).
(5) Lift the LED module (5) until you see the electrical connector (8).

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

(6) Disconnect the electrical connector (8) from the LED module (5) and hold the electrical connector (8).
(7) Remove the LED module (5).
(8) Remove the O-ring (6).
(9) Temporarily attach the electrical connector (8) to the flange (7) with the TIE WRAP(S).
(10) Clean the surface of the fuselage around the upper anti-collision (beacon) light with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with a warm soap solution.
(11) Make sure that no liquid goes into the flange (7).
(12) Dry the surface with a dry Textile-Lint free Cotton - (Material No.14SBA1) .
(13) Apply the Adhesive Film Tape-- Aluminium Foil - Sound damping - (Material No.05RAC1) on the top of the flange (7) and the adjacent area of the fuselage.
(14) Make sure that the Adhesive Film Tape-- Aluminium Foil - Sound damping - (Material No.05RAC1) is installed correctly.
(15) The Adhesive Film Tape-- Aluminium Foil - Sound damping - (Material No.05RAC1) must fully seal the opening of the upper anti-collision (beacon) light.
(16) Record the temporary repair of the upper anti-collision (beacon) light in the aircraft logbook.
(17) Keep circuit breaker 1LV open, safetied and tagged.

Subtask 33-48-11-020-051-C ** ON A/C NOT FOR ALL

A. Removal of upper beacon/strobe light 7LV.
(1) Make match marks on the screws (11) that you remove to record their positions. This is important for the subsequent installation procedure.
(2) Remove the screws (11) from the lens (9).
(3) Remove the lens (9) with the seal (8).
(4) Remove the bung (10) from the lens (9).
(5) Remove the screws (5) from the light assembly (2).
(6) Lift the light assembly (2) until you see the electrical connector (1).

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

(7) Disconnect the electrical connector (1) from the light assembly (2).
(8) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(9) Remove the light assembly (2) with the seal (12) from the fuselage.

[Rev.10 from 2021] 2026.04.01 00:56:21 UTC