Close the APU Doors after Access

TASK 52-41-00-410-001-A
Close the APU Doors after Access

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

WARNING: PUT ON GLOVES WHEN YOU DO THIS PROCEDURE. THE FRAMES HAVE SHARP EDGES, AND YOU CAN CUT YOUR FINGERS.

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 4M (13 FT)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	1	WARNING NOTICE(S)

B. Referenced Information

REFERENCE	DESIGNATION
Opening and Closing Procedure of the APU Access Doors

3. Job Set-up
Subtask 52-41-00-865-053-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
121VU	APU/APU/CTL	2KD	L42
121VU	APU/ECB/SPLY	1KD	L41

Subtask 52-41-00-860-052-A

B. Safety Precautions
(1) Put the ACCESS PLATFORM 4M (13 FT) in position below the APU compartment.
(2) Make sure that the WARNING NOTICE(S) is in the flight compartment to tell persons not to start the APU.

4. Procedure
Subtask 52-41-00-410-052-A

A. Close the APU Access Doors

Opening and Closing Procedure of the APU Access Doors

(1) Close the APU access door 316AR (9) as follows:
(a) Push the handle (12) outboard and then push the control handle (8) to release the access door (9) from its overcenter position.
(b) Pull the handle (12) to move the access door (9) to its close position.
(c) Operate the two latches of the shoot-bolts (10) to latch the access door (9).
(d) Make sure that the seal on the aircraft air intake box is correctly compressed over its length.
(2) Close the APU access door 315AL (2) as follows:
(a) Hold the access door (2) and release the pip-pin (3) from the fuselage structure.
(b) Push the knurled grip (4) back and move the telescopic strut (5) to the closed position. Lock the telescopic strut (5) to the door attach point.
(c) Close the access door (2) and lock it with the two shoot bolts (1).
(d) Lock the three quick-release fasteners (6) at the bottom of the doors.
(e) Make sure that the locking hooks of the quick-release fasteners (6) are correctly engaged with the clevises (11) on access door 316AR (9).

5. Close-up
Subtask 52-41-00-860-053-A

A. 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 access platform.
(3) Remove the warning notice from the flight compartment.

Subtask 52-41-00-865-054-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
121VU	APU/APU/CTL	2KD	L42
121VU	APU/ECB/SPLY	1KD	L41

[Rev.10 from 2021] 2026.04.01 01:44:27 UTC