Deactivation of the Lens of the Rear Navigation and Strobe Light Assembly

TASK 33-41-00-040-804-A
Deactivation of the Lens of the Rear Navigation and Strobe Light Assembly

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: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:

THE FLIGHT CONTROLS
THE FLIGHT CONTROL SURFACES
THE LANDING GEAR AND THE RELATED DOORS
COMPONENTS THAT MOVE.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.

WARNING: BEFORE YOU START WORK, YOU MUST PUT ON A SAFETY HARNESS AND ATTACH IT TO THE ACCESS PLATFORM. WITHOUT A SAFETY HARNESS, YOU CAN FALL. THIS CAN KILL YOU OR CAUSE YOU INJURY.

WARNING: WEAR GLASSES AND PROTECTIVE CLOTHING WHEN YOU DO WORK ON THE LIGHT. THE LAMP IS PRESSURIZED AND AN EXPLOSION CAN OCCUR.

WARNING: DO NOT TOUCH THE STROBE LIGHTS FOR AT LEAST 5 MINUTES AFTER OPERATION. THE STROBE LIGHT WILL STILL BE HOT.

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.

ZONE: 317

1. Reason for the Job
CDL 33-03
Rear Light Lens 15LA, 16LA
This task is for light 16LA. For 15LA refer to the applicable task.
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	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
317	TAIL CONE APU AND ACCESSORY COMPARTMENT

C. Referenced Information

REFERENCE	DESIGNATION
Lens of the Rear Navigation and Strobe Light Assembly

3. Job Set-up
Subtask 33-41-00-941-059-A ** ON A/C NOT FOR ALL

A. Safety Precautions

WARNING: DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS WHEN YOU DO THE MAINTENANCE TASK(S).

(1) Put the SAFETY BARRIER(S) in position.
(2) In the cockpit, on panel 25VU:

Make sure that the STROBE switch is in the OFF position.
Make sure that the NAV & LOGO switch is in the OFF position.
Make sure that the APU MASTER SW pushbutton switch is in the OFF position.
Put a WARNING NOTICE(S) to tell persons not to operate the navigation lights or the strobe lights.
Put a WARNING NOTICE(S) to tell persons not to operate the APU.

Subtask 33-41-00-941-060-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Put the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE at the APU tail-cone-exhaust area.

Subtask 33-41-00-865-066-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	APU/APU/CTL	2KD	L42
121VU	APU/ECB/SPLY	1KD	L41
122VU	LIGHT/EXT LT NAV1/AND LOGO/LT	1LA	T03
122VU	LIGHTING/EXT LT/NAV2/AND LOGO/LT	2LA	T02
122VU	LIGHTING/WING/STROBE	10LV	V05

4. Procedure
Subtask 33-41-00-040-053-A ** ON A/C NOT FOR ALL

A. Deactivation of the Lens of the Rear Navigation and Strobe Light Assembly
(1) Remove the lens (2) from the rear navigation and strobe light assembly (1):
(a) Remove the screws (3) from the lens (2).
(b) Remove the lens (2) from the rear navigation and strobe light assembly (1).

NOTE: It is not necessary to remove the LED module from rear navigation and strobe light assembly. You must only remove the lens of the rear navigation and strobe light assembly.

(2) Make an applicable entry in the logbook to indicate that you did the deactivation procedure.

5. Close-up
Subtask 33-41-00-865-067-A ** ON A/C NOT FOR ALL

A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	APU/APU/CTL	2KD	L42
121VU	APU/ECB/SPLY	1KD	L41
122VU	LIGHT/EXT LT NAV1/AND LOGO/LT	1LA	T03
122VU	LIGHTING/EXT LT/NAV2/AND LOGO/LT	2LA	T02
122VU	LIGHTING/WING/STROBE	10LV	V05

Subtask 33-41-00-942-057-A ** ON A/C NOT FOR ALL

B. Put the aircraft back to the serviceable condition.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the safety barriers.
(3) Remove the WARNING NOTICE(S).
(4) Remove the access platform(s).
(5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.02 06:22:42 UTC