Removal of the Cabin Emergency Lights

TASK 33-51-11-000-001-A
Removal of the Cabin Emergency Lights

WARNING: MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT. UNWANTED ELECTRICAL POWER CAN BE DANGEROUS.

WARNING: WHEN YOU INSTALL THE EMERGENCY LIGHT OR THE LIGHT LENS, MAKE SURE THAT IT POINTS TO THE FLOOR. IF IT DOES NOT POINT TO THE FLOOR, THERE IS A RISK THAT, DURING EVACUATION: - THE PASSENGERS WILL GET THE LIGHT IN THEIR EYES - THE PASSENGERS WILL NOT SEE THE EMERGENCY ESCAPE PATH CORRECTLY.

NOTE: The procedure is the same for all cabin emergency lights.

FIN: 20WL
FIN: 200WL
FIN: 201WL
FIN: 202WL
FIN: 203WL
FIN: 204WL
FIN: 205WL
FIN: 206WL
FIN: 207WL ** ON A/C NOT FOR ALL
FIN: 208WL ** ON A/C NOT FOR ALL
FIN: 209WL ** ON A/C NOT FOR ALL
FIN: 21WL
FIN: 210WL ** ON A/C NOT FOR ALL
FIN: 32WL
FIN: 33WL
FIN: 34WL ** ON A/C NOT FOR ALL
FIN: 35WL ** ON A/C NOT FOR ALL
FIN: 36WL ** ON A/C NOT FOR ALL
FIN: 37WL ** ON A/C NOT FOR ALL
FIN: 70WL1 ** ON A/C NOT FOR ALL
FIN: 70WL2 ** ON A/C NOT FOR ALL
FIN: 70WL3 ** ON A/C NOT FOR ALL
FIN: 70WL4 ** ON A/C NOT FOR ALL

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

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [70WL1] (ESCAPE HATCH-HANDLE LIGHT)
241FW
241CW
FOR [70WL2] (ESCAPE HATCH-HANDLE LIGHT)
242CW
242FW
FOR [70WL3] (ESCAPE HATCH-HANDLE LIGHT)
241LW
FOR [70WL4] (ESCAPE HATCH-HANDLE LIGHT)
242LW

C. Referenced Information

REFERENCE	DESIGNATION
Cabin Emergency Light ** ON A/C NOT FOR ALL
Cabin Emergency Light ** ON A/C NOT FOR ALL
Cabin Emergency Light ** ON A/C NOT FOR ALL
Cabin Emergency Light ** ON A/C NOT FOR ALL
Cabin Emergency Light ** ON A/C NOT FOR ALL
Cabin Emergency Light - Escape-Hatch Handle Lighting ** ON A/C NOT FOR ALL
Cabin Emergency Light - Escape-Hatch Handle Lighting ** ON A/C NOT FOR ALL
Cabin Emergency Light - Escape-Hatch Handle Lighting ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 33-51-11-865-050-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	LIGHTING/EMER LT/CABIN	2WL	H06
49VU	LIGHTING/EMER LT/CABIN	1WL	H05
** ON A/C NOT FOR ALL
49VU	LIGHTING/EMER LT/CABIN	2WL	H04
49VU	LIGHTING/EMER LT/CABIN	1WL	H03

Subtask 33-51-11-860-053-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) On the overhead panel 25VU, make sure that the EMER EXIT LT switch 4WL is in the OFF position.
(2) On the overhead panel 25VU, make sure that the NO SMOKING switch 190RH is in the OFF position.
(3) On the Forward Attendant Panel (FAP) 120RH, make sure that the LIGHT EMER pushbutton switch and its integral lights are off.

Subtask 33-51-11-860-053-D ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) On overhead panel 25VU, make sure that EMER EXIT LT switch 4WL is in the OFF position.
(2) On overhead panel 25VU, make sure that NO SMOKING switch 190RH is in the OFF position.
(3) On Flight Attendant Panel (FAP) 120RH, make sure that the EMER pushbutton and its light are off.

Subtask 33-51-11-860-053-E ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) On the overhead panel 25VU, make sure that the EMER EXIT LT switch 4WL is in the OFF position.
(2) On the overhead panel 25VU, make sure that the EXIT switch 190RH is in the OFF position.
(3) On the Flight Attendant Panel (FAP) 120RH, make sure that the EMER button and its light are off.

Subtask 33-51-11-860-053-F ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) On overhead panel 25VU, make sure that EMER EXIT LT switch 4WL is in the OFF position.
(2) On overhead panel 25VU, make sure that No PED switch 190RH is in the OFF position.
(3) On Flight Attendant Panel (FAP) 120RH, make sure that the EMER button and its light are off.

Subtask 33-51-11-010-052-A ** ON A/C NOT FOR ALL

C. Get Access

(1) FOR [70WL1] (ESCAPE HATCH-HANDLE LIGHT)
Remove access panel 241CW.

(2) FOR [70WL2] (ESCAPE HATCH-HANDLE LIGHT)
Remove access panel 242CW.

(3) FOR [70WL3] (ESCAPE HATCH-HANDLE LIGHT)
Remove access panel 241LW.

(4) FOR [70WL4] (ESCAPE HATCH-HANDLE LIGHT)
Remove access panel 242LW.

Subtask 33-51-11-010-052-B ** ON A/C NOT FOR ALL

C. Get Access

(1) FOR [70WL1] (ESCAPE HATCH-HANDLE LIGHT)
Remove access panel 241FW.

(2) FOR [70WL2] (ESCAPE HATCH-HANDLE LIGHT)
Remove access panel 242FW.

4. Procedure
Subtask 33-51-11-020-050-B ** ON A/C NOT FOR ALL

CAUTION: MAKE MATCH MARKS ON ALL THE ELECTRICAL WIRES BEFORE YOU DISCONNECT THEM. INCORRECT CONNECTION OF WIRES WILL CAUSE DAMAGE TO EQUIPMENT.

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.

A. Removal of the Cabin Emergency Light

Cabin Emergency Light ** ON A/C NOT FOR ALL

(1) Removal of the Cabin Emergency-Light Assembly mounted in the Ceiling
(a) Carefully remove the lens (4) from the light housing (5).
(b) Remove the screws (1) and remove the light housing (5) from the mounting hole.
(c) Support the light housing (5) and disconnect the electrical connector (2).
(d) Remove the light housing (5).
(e) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(2) Removal of the Cabin Emergency-Light Assembly mounted in the Door-Area
(a) Carefully remove the lens (6) from the light housing (7).
(b) Release the attachment clips (9) and remove the light housing (7) from the mounting hole.
(c) Support the light housing (7) and disconnect the electrical connectors (8).
(d) Remove the light housing (7).
(e) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(3) Removal of the Bulb(s) of the Cabin Emergency Light
(a) Carefully remove the lens (4) and (6) from the light housing (5) and (7).
(4) Remove the bulb(s) (3) and (10).

Subtask 33-51-11-020-050-D ** ON A/C NOT FOR ALL

CAUTION: MAKE MATCH MARKS ON ALL THE ELECTRICAL WIRES BEFORE YOU DISCONNECT THEM. INCORRECT CONNECTION OF WIRES WILL CAUSE DAMAGE TO EQUIPMENT.

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.

A. Removal of the Cabin Emergency Light

Cabin Emergency Light ** ON A/C NOT FOR ALL

(1) Removal of the Cabin Emergency-Light Assembly mounted in the Ceiling
(a) Carefully remove the lens (3) from the light housing (4).
(b) Remove the screws (1) and remove the light housing (4) from the mounting hole.
(c) Support the light housing (4) and disconnect the electrical connector (2).
(d) Remove the light housing (4).
(e) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(2) Removal of the Cabin Emergency-Light Assembly mounted in the Door-Area
(a) Carefully remove the lens (5) and (12) from the light housing (6) and (10).
(b) Release the attachment clips (8) and (11) and remove the light housing (6) and (10) from the mounting hole.
(c) Support the light housing (6) and (10) and disconnect the electrical connectors (7) and (9).
(d) Remove the light housing (6) and (10).
(e) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.

Subtask 33-51-11-020-050-E ** ON A/C NOT FOR ALL

CAUTION: MAKE MATCH MARKS ON ALL THE ELECTRICAL WIRES BEFORE YOU DISCONNECT THEM. INCORRECT CONNECTION OF WIRES WILL CAUSE DAMAGE TO EQUIPMENT.

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.

A. Removal of the Cabin Emergency Light

Cabin Emergency Light ** ON A/C NOT FOR ALL

(1) Removal of the Cabin Emergency-Light Assembly mounted in the Ceiling
(a) Carefully remove the lens (3) from the light housing (4).
(b) Remove the screws (1) and remove the light housing (4) from the mounting hole.
(c) Support the light housing (4) and disconnect the electrical connector (2).
(d) Remove the light housing (4).
(e) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(2) Removal of the Cabin Emergency-Light Assembly mounted in the Door-Area
(a) Carefully remove the lens (5) from the light housing (6).
(b) Release the attachment clips (8) and remove the light housing (6) from the mounting hole.

CAUTION: AFTER YOU REMOVE THE LIGHT HOUSING FROM THE MOUNTING HOLE, MAKE MATCH MARKS ON THE ATTACHMENT CLIPS OF THE LIGHT HOUSING. THIS WILL PREVENT DAMAGE TO THE EQUIPMENT BECAUSE OF INCORRECT INSTALLATION.

(c) Support the light housing (6) and disconnect the electrical connectors (7).
(d) Remove the light housing (6).
(e) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.

Subtask 33-51-11-020-050-G ** ON A/C NOT FOR ALL

CAUTION: MAKE MATCH MARKS ON ALL THE ELECTRICAL WIRES BEFORE YOU DISCONNECT THEM. INCORRECT CONNECTION OF WIRES WILL CAUSE DAMAGE TO EQUIPMENT.

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.

A. Removal of the cabin emergency light

Cabin Emergency Light ** ON A/C NOT FOR ALL

(1) Removal of the cabin emergency-light assembly installed in the ceiling
(a) Release the attachment clip (3) and remove the light housing (2) from the wall panel.
(b) Hold the light housing (2) and disconnect the electrical connectors (4) from the faston tabs (1).
(c) Remove the light housing (2).
(d) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(2) Removal of the Cabin Emergency-Light Assembly installed in the Door-Area
(a) Carefully remove the lens (5) and (12) from the light housing (6) and (10).
(b) Release the attachment clips (8) and (11) and remove the light housing (6) and (10) from the mounting hole.

(c) Hold the light housings (6) and (10) and disconnect the electrical connectors (7) and (9).
(d) Remove the light housing (6) and (10).
(e) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.

Subtask 33-51-11-020-050-H ** ON A/C NOT FOR ALL

CAUTION: MAKE MATCH MARKS ON ALL THE ELECTRICAL WIRES BEFORE YOU DISCONNECT THEM. INCORRECT CONNECTION OF WIRES WILL CAUSE DAMAGE TO EQUIPMENT.

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.

A. Removal of the Cabin Emergency Light

Cabin Emergency Light ** ON A/C NOT FOR ALL

(1) Removal of the Cabin Emergency-Light Assembly installed in the Ceiling
(a) Release the attachment clip (3) and remove the light housing (2) from the wall panel.
(b) Hold the light housing (2) and disconnect the electrical connectors (4) from the Faston tabs (1).
(c) Remove the light housing (2).
(d) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(2) Removal of the Cabin Emergency-Light Assembly installed in the Door-Area
(a) Carefully remove the lens (5) from the light housing (6).
(b) Release the attachment clips (8) and remove the light housing (6) from the mounting hole.

(c) Hold the light housing (6) and disconnect the electrical connectors (7).
(d) Remove the light housing (6).
(e) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.

Subtask 33-51-11-020-051-A ** ON A/C NOT FOR ALL

B. Removal of the Escape Hatch-Handle Light

Cabin Emergency Light - Escape-Hatch Handle Lighting ** ON A/C NOT FOR ALL

(1) Removal of the Escape Hatch-Handle Light-Assembly

CAUTION: MAKE MATCH MARKS ON ALL THE ELECTRICAL WIRES BEFORE YOU DISCONNECT THEM. INCORRECT CONNECTION OF WIRES WILL CAUSE DAMAGE TO EQUIPMENT.

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.

(a) Disconnect the electrical connectors (19).
(b) Release the spring clips (18) and remove the escape hatch-handle light (15).
(c) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(2) Removal of the Bulb(s) of the Escape Hatch-Handle Light
(a) Remove the lens (17) from the light housing.
(b) Remove the bulb(s) (16).

Subtask 33-51-11-020-051-B ** ON A/C NOT FOR ALL

B. Removal of the Escape Hatch-Handle Light

Cabin Emergency Light - Escape-Hatch Handle Lighting ** ON A/C NOT FOR ALL

(1) Removal of the Escape Hatch-Handle Light-Assembly

CAUTION: MAKE MATCH MARKS ON ALL THE ELECTRICAL WIRES BEFORE YOU DISCONNECT THEM. INCORRECT CONNECTION OF WIRES WILL CAUSE DAMAGE TO EQUIPMENT.

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.

(a) Disconnect the electrical connectors (17).
(b) Release the spring clips (16) and remove the escape hatch-handle light (15).
(c) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.

[Rev.10 from 2021] 2026.04.01 00:57:19 UTC