Removal of the Flash Tube Assembly of the Upper Beacon/Strobe Light
TASK 33-48-11-000-003-A
Removal of the Flash Tube Assembly of the Upper Beacon/Strobe Light
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 33-48-11-861-052-A ** ON A/C NOT FOR ALL
Subtask 33-48-11-020-054-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 00:56:25 UTC
Removal of the Flash Tube Assembly of the Upper Beacon/Strobe Light
WARNING:
ISOLATE THE ELECTRICAL CIRCUITS FROM THE RELATED EQUIPMENT AND THE ENVIRONMENT.
WARNING:
DO NOT TOUCH THE STROBE LIGHTS FOR AT LEAST 5 MINUTES AFTER OPERATION. THE STROBE LIGHT WILL STILL BE HOT.
WARNING:
DO NOT REMOVE THE STROBE LIGHT FOR AT LEAST TEN MINUTES AFTER YOU DE-ENERGIZE THE ELECTRICAL CIRCUITS. THE HIGH VOLTAGE ELECTRICAL CURRENT IN THE CAPACITOR OF THE STROBE LIGHT IS DANGEROUS.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | CAP - BLANKING |
| No specific | 1 | WARNING NOTICE(S) |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 240 | MID PASSENGER COMPARTMENT |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 24-41-00-861-002-A | Energize the Aircraft Electrical Circuits from the External Power |
| TASK 24-41-00-861-002-A-01 | Energize the Aircraft Electrical Circuits from the APU |
| TASK 24-41-00-861-002-A-02 | Energize the Aircraft Electrical Circuits from Engine 1(2) |
| TASK 33-48-11-000-001-A | Removal of the Upper Beacon/Strobe Light from the Outside of the Fuselage |
| TASK 33-48-11-000-002-A | Removal of the Upper Beacon/Strobe Light from the Inside of the Fuselage |
Subtask 33-48-11-861-052-A ** ON A/C NOT FOR ALL
A. Energize the aircraft electrical circuits
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
Subtask 33-48-11-941-053-A ** ON A/C NOT FOR ALL (1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
B. Safety Precautions
(1) Put a WARNING NOTICE(S) on panel 25VU to tell persons not to operate the strobe lights or the navigation lights.
Subtask 33-48-11-865-059-A ** ON A/C NOT FOR ALL (1) Put a WARNING NOTICE(S) on panel 25VU to tell persons not to operate the strobe lights or the navigation lights.
C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
Subtask 33-48-11-010-057-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 122VU | LIGHTING/EXT LT/BEACON/UPPER | 1LV | U06 |
D. Get Access
(1) Make sure that switch 2LV BEACON ON-OFF on overhead panel 25VU is in the OFF position.
(2) Remove the upper beacon/strobe light (Ref. AMM TASK 33-48-11-000-001) or (Ref. AMM TASK 33-48-11-000-002).
4. Procedure(1) Make sure that switch 2LV BEACON ON-OFF on overhead panel 25VU is in the OFF position.
(2) Remove the upper beacon/strobe light (Ref. AMM TASK 33-48-11-000-001) or (Ref. AMM TASK 33-48-11-000-002).
Subtask 33-48-11-020-054-A ** ON A/C NOT FOR ALL
A. Removal of the Flash Tube Assembly of Upper Beacon/Strobe Light
(1) Remove the screws (1) from the housing (2) of the upper beacon/strobe light.
(2) Lift the flash tube assembly (5) until you can see the electrical connectors (4).
(4) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(5) Remove the flash tube assembly (5) from the housing (2) of the upper beacon/strobe light.
Subtask 33-48-11-020-054-GL ** ON A/C NOT FOR ALL (1) Remove the screws (1) from the housing (2) of the upper beacon/strobe light.
(2) Lift the flash tube assembly (5) until you can see the electrical connectors (4).
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.
CAUTION:
MAKE MATCH MARKS ON ALL THE ELECTRICAL WIRES BEFORE YOU DISCONNECT THEM. INCORRECT CONNECTION OF WIRES WILL CAUSE DAMAGE TO EQUIPMENT.
(3) Disconnect the electrical connectors (4) from the transformer (3). (4) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(5) Remove the flash tube assembly (5) from the housing (2) of the upper beacon/strobe light.
A. Removal of the flash tube assembly of upper beacon/strobe light
(1) Remove the screws (4) from the housing (3).
(2) Remove the screws (1) from the faraday cage (8).
(3) Remove the faraday cage (8) from the plate (2) of the upper beacon/strobe light.
(4) Remove the housing (3) from the plate (2) of the upper beacon/strobe light.
(6) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(7) Remove the flash tube assembly (7) from the plate (2) of the upper beacon/strobe light.
(1) Remove the screws (4) from the housing (3).
(2) Remove the screws (1) from the faraday cage (8).
(3) Remove the faraday cage (8) from the plate (2) of the upper beacon/strobe light.
(4) Remove the housing (3) from the plate (2) of the upper beacon/strobe light.
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.
CAUTION:
MAKE MATCH MARKS ON ALL THE ELECTRICAL WIRES BEFORE YOU DISCONNECT THEM. INCORRECT CONNECTION OF WIRES WILL CAUSE DAMAGE TO EQUIPMENT.
(5) Disconnect the electrical connectors (6) from the transformer (5).(6) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(7) Remove the flash tube assembly (7) from the plate (2) of the upper beacon/strobe light.
Flash Tube Assembly of the Upper Beacon Light