Adjustment of the Air-Intake Flap Actuator (131-9(A))

TASK 49-16-51-820-003-A
Adjustment of the Air-Intake Flap Actuator (131-9(A))

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

ZONE: 313
ZONE: 314
FIN: 4015KM ** 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	1	ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE
No specific	1	FLASHLIGHT
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 0.8 and 0.7 m.daN (70.80 and 61.95 lbf.in )
98L12003001000	AR	HARNESS,SAFETY

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.04TMB2)	Varnish-- Electrical Bonding Structure
(Material No.06AAB1)	Polysulfide Sealant-General Purpose Fillet -
No specific	lockwire-corrosion resistant steel 0.8mm

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
313	TAIL CONE APU AIR INTAKE AREA
314	TAIL CONE APU AIR INTAKE AREA
314AR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
17	COTTER PIN	AIPC 49-16-04-03-070
17	COTTER PIN	AIPC 49-16-84-40-350

E. Referenced Information

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 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 29-00-00-864-001-A	Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 49-16-00-710-003-A	Operational Test of the Air Intake Flap and Diverter (131-9(A))
TASK 49-16-43-000-006-A	Removal of the Catwalk Panel (131-9(A))
TASK 49-16-43-400-006-A	Installation of the Catwalk Panel (131-9(A))
TASK 52-41-23-010-801-A	Opening of Access Door 314AR
TASK 52-41-23-410-801-A	Closing of Access Door 314AR
Air-Intake Flap Actuator

3. Job Set-up
Subtask 49-16-51-860-066-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) On the overhead panel 25VU, make sure that the APU MASTER SW pushbutton switch is released (ON legend is off).
(3) On the APU section of overhead panel 25VU, put a WARNING NOTICE(S) to tell persons not to start the APU.
(4) Make sure that the hydraulic systems are depressurized
(Ref. AMM TASK 29-00-00-864-001).

Subtask 49-16-51-010-055-A ** ON A/C NOT FOR ALL

B. Get Access

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.

(1) Put on and attach the HARNESS, SAFETY before you start work in the work area.
(2) Put an ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below access door 314AR.
(3) Open access door 314AR and safety it in the open position.
(Ref. AMM TASK 52-41-23-010-801).
(4) If necessary, use a FLASHLIGHT.
(5) Remove the catwalk panel (Ref. AMM TASK 49-16-43-000-006).

4. Procedure
Subtask 49-16-51-210-057-A ** ON A/C NOT FOR ALL

A. Check of the Air Intake Actuator
(1) Make sure that the air intake flap is in the ground position (open).
(2) Make sure that the air intake flap is aligned with the contour of the inner top wall of the air inlet duct. The maximum permitted deviation B from the contour 1.0 mm (0.0394 in.) in the opened position.
(3) If necessary, adjust the air-intake flap actuator.

Subtask 49-16-51-865-067-A ** ON A/C NOT FOR ALL

B. 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

Subtask 49-16-51-820-053-A ** ON A/C NOT FOR ALL

C. Adjustment of the Air Intake Actuator
(1) Remove the clamp (11) and push the bellows (12) down.

WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

(2) Remove and discard the lockwire from the locknut (7) and loosen the locknut (7).
(3) Remove and discard the cotter pin (17).
(4) Remove the castle nut (16), the washers (22) and (15) and the bolt (10).
(5) Adjust the end fitting (8) in half-turn steps until you get the correct length. One half-turn causes the air intake flap to move approximately 1.0 mm (0.0394 in.).
(6) Align the end fitting (8) and examine the thread-engage inspection hole.

(7) Tighten the locknut (7) and safety it with lockwire-corrosion resistant steel 0.8mm.
(8) Install the bolt (10), the washers (15) and (22) and the castle nut (16).
(9) TORQUE the castle nut (16) to between 0.8 and 0.7 m.daN (70.80 and 61.95 lbf.in )

and safety it with a new AIPC 49-16-04-03-070 COTTER PIN (17) or AIPC 49-16-84-40-350 COTTER PIN (17).
(10) Seal the connection with the Polysulfide Sealant-General Purpose Fillet - (Material No.06AAB1) and apply the Varnish-- Electrical Bonding Structure (Material No.04TMB2) .
(11) Install the clamp (11) and connect the bellows (12) to the air-intake flap actuator (6).

Subtask 49-16-51-865-070-A ** ON A/C NOT FOR ALL

D. 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

Subtask 49-16-51-710-055-A ** ON A/C NOT FOR ALL

E. Do the operational test of the air intake flap (Ref. AMM TASK 49-16-00-710-003).

5. Close-up
Subtask 49-16-51-410-055-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the catwalk panel (Ref. AMM TASK 49-16-43-400-006).
(3) Close access door 314AR (Ref. AMM TASK 52-41-23-410-801).
(4) Remove the access platform(s).
(5) Remove the safety harness.

Subtask 49-16-51-860-067-A ** ON A/C NOT FOR ALL

B. Put the aircraft back to its initial configuration.
(1) Put the related hydraulic system in the pressurized configuration (Ref. AMM TASK 29-00-00-864-001).
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 01:28:19 UTC