Reactivation of the Lens of the Rear Navigation and Strobe Light Assembly
TASK 33-41-00-440-804-A
Reactivation of the Lens of the Rear Navigation and Strobe Light Assembly
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
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 33-41-00-941-061-A ** ON A/C NOT FOR ALL
Subtask 33-41-00-440-053-A ** ON A/C NOT FOR ALL
Subtask 33-41-00-865-069-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 00:54:55 UTC
Reactivation 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.
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.
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
ZONE: 317
1. Reason for the JobCDL 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
B. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| No specific | DELO-ML5327 |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 317 | TAIL CONE APU AND ACCESSORY COMPARTMENT |
| REFERENCE | DESIGNATION |
|---|---|
Subtask 33-41-00-941-061-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(2) In the cockpit, on panel 25VU:
Subtask 33-41-00-941-062-A ** ON A/C NOT FOR ALL 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.
B. Get Access
(1) Put the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE in position at the APU tail-cone-exhaust area.
Subtask 33-41-00-865-068-A ** ON A/C NOT FOR ALL (1) Put the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE in position at the APU tail-cone-exhaust area.
C. Open, safety and tag this(these) circuit breaker(s):
4. Procedure| 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 33-41-00-440-053-A ** ON A/C NOT FOR ALL
A. Reactivation of the Lens of the Rear Navigation and Strobe Light Assembly
(1) Install a new lens (2) on the rear navigation and strobe light assembly (1):
(a) Put the lens (2) in position in the rear navigation and strobe light assembly (1).
(b) Install the screws (3) in the lens (2).
(c) TORQUE the screws (3) to between 0.106 and 0.094 m.daN (9.38 and 8.32 lbf.in )
(d) Secure the screws (3) with DELO-ML5327.
(2) Make an applicable entry in the logbook to indicate that you did the reactivation procedure.
5. Close-up(1) Install a new lens (2) on the rear navigation and strobe light assembly (1):
(a) Put the lens (2) in position in the rear navigation and strobe light assembly (1).
(b) Install the screws (3) in the lens (2).
(c) TORQUE the screws (3) to between 0.106 and 0.094 m.daN (9.38 and 8.32 lbf.in )

(d) Secure the screws (3) with DELO-ML5327.
(2) Make an applicable entry in the logbook to indicate that you did the reactivation procedure.
Subtask 33-41-00-865-069-A ** ON A/C NOT FOR ALL
A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 33-41-00-942-058-A ** ON A/C NOT FOR ALL | 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 |
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.
(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.
Lens of the Rear Navigation and Strobe Light Assembly