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

TASK 33-48-11-000-002-A
Removal of the Upper Beacon/Strobe Light from the Inside of the Fuselage

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

NOTE: You can also remove the upper beacon/strobe light from the outside of the fuselage (Ref. TASK 33-48-11-000-001).

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	AR	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	1	STEPLADDER 1.5 M (5 FT)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
241CC

C. Referenced Information

REFERENCE	DESIGNATION
TASK 25-23-41-000-001-A	Removal of the Ceiling Panels
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 33-48-11-860-050-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that switch 2LV BEACON ON-OFF on the overhead panel 25VU is in the OFF position.
(2) Make sure that switch 4WL EMER EXIT LT OFF-ARM-ON on the overhead panel 25VU is in the OFF position.
(3) Make sure that the pushbutton EMERG LIGHT on Forward Attendant Panel (FAP) 120RH is in the released position.

Subtask 33-48-11-860-050-B ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the switch 2LV BEACON ON-OFF on the overhead panel 25VU is in the OFF position.
(2) Make sure that the switch 4WL EMER EXIT LT OFF-ARM-ON on the overhead panel 25VU is in the OFF position.
(3) Make sure that the EMER button on the Flight Attendant Panel (FAP) 120RH is OFF.

Subtask 33-48-11-865-051-A

B. 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 33-48-11-010-053-A

C. Get Access
(1) Put the STEPLADDER 1.5 M (5 FT) in position.
(2) Remove center ceiling panel 241CC to get access to the upper beacon/strobe light (Ref. AMM TASK 25-23-41-000-001).

4. Procedure
Subtask 33-48-11-020-052-B ** ON A/C NOT FOR ALL

A. Removal of Upper Beacon/Strobe Light 7LV

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

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.

(1) Disconnect the electrical connector (8) from the LED module (5).
(2) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(3) Loosen the screw (9) from the clamp (10).
(4) Remove the clamp (10).
(5) Lower the flange (7) with the O-ring (6).
(6) Remove the screws (4) from the LED module (5).
(7) Remove the LED module (5) from the flange (7).

Subtask 33-48-11-020-052-C ** ON A/C NOT FOR ALL

A. Removal of Upper Beacon/Strobe Light 7LV

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

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.

(1) Disconnect the electrical connector (1) from the light assembly (2).
(2) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(3) Loosen the screw (7) and remove the V-clamp (6) from the flange (3).
(4) Disengage the pin (13) of the light assembly (2) from the bung (10).
(5) Lower the moveable part of the flange (3) with the O-ring (4).
(6) Remove the screws (5) from the light assembly (2).
(7) Remove the light assembly (2) with the seal (12) from the moveable part of the flange (3).

[Rev.10 from 2021] 2026.04.01 12:34:01 UTC