Installation of the Fan Air Valve (FAV)

TASK 36-11-54-400-803-A
Installation of the Fan Air Valve (FAV)

WARNING: MAKE SURE THAT THE PNEUMATIC SYSTEM IS DEPRESSURIZED BEFORE YOU START WORK. PRESSURIZED AIR CAN CAUSE INJURY TO PERSONNEL.

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AFTER SHUTDOWN. THE ENGINE CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.

WARNING: ALWAYS USE APPLICABLE GLOVES TO TOUCH HOT PARTS. HOT PARTS CAN CAUSE INJURY TO PERSONS.

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

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.

ZONE: 471
ZONE: 481
FIN: 7120HM1 ** ON A/C NOT FOR ALL
FIN: 7120HM2 ** 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	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 0.38 and 0.31 m.daN (33.63 and 27.43 lbf.in )
No specific	Torque wrench: range to between 1.41 and 1.3 m.daN (124.78 and 115.04 lbf.in )
98D27803000000	1	LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION
98D36003004000	1	BLOCKING DEVICE FAV

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.06LDG2)	Non Hardening Jointing Putty-High Temp. Area - Structure
(Material No.14QDC1)	Wire-Locking Dia: 0.5 mm (0.020 inch) CRES -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
471	PYLON LEADING EDGE
481	PYLON LEADING EDGE
191DB
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR, 451AL, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR, 461AL, 462AR
FOR [9HA1] (VALVE-FAN AIR, ENG1)
415AR
FOR [9HA2] (VALVE-FAN AIR, ENG2)
425AR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
16	SEAL	AIPC 36-11-86-03-320
26	SEAL	AIPC 36-11-86-03-350

E. Referenced Information

REFERENCE	DESIGNATION
TASK 20-23-22-910-001-A	Marking of the Unions after Application of Standard or Specific Tightening Torque
TASK 20-28-00-912-802-A	Electrical Bonding - General Maintenance Procedure
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 24-41-00-862-002-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 27-00-00-480-002-A	Installation of the Flap/Slat Control-Lever Locking Tool (98D27803000000)
TASK 36-11-00-740-802-A	BITE Test of the Engine Bleed Air System (EBAS) (System Test)
TASK 49-00-00-860-009-A	APU Shutdown by External Power (131-9(A))
TASK 49-00-00-860-009-A-01	APU Shutdown by Batteries (131-9(A))
TASK 71-00-00-860-833-A	Procedure to Prevent Engine Motoring
TASK 78-30-00-040-805-A	Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-30-00-440-805-A	Reactivation of the Thrust Reverser System after Ground Maintenance
Fan Air Valve (FAV)
Fan Air Valve (FAV) locking device tool
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
TASK 71-13-00-010-802-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-802-A	Closing of the Fan Cowl Doors
TASK 78-36-00-010-802-A	Opening of the Thrust Reverser Cowl-Doors
TASK 78-36-00-410-802-A	Closing of the Thrust Reverser Cowl-Doors
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
TASK 71-13-00-010-802-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-802-A	Closing of the Fan Cowl Doors
TASK 78-36-00-010-802-A	Opening of the Thrust Reverser Cowl-Doors
TASK 78-36-00-410-802-A	Closing of the Thrust Reverser Cowl-Doors
FOR [9HA1] (VALVE-FAN AIR, ENG1)
TASK 54-51-21-000-802-A	Removal of the Pylon Lateral Access-Doors
TASK 54-51-21-400-802-A	Installation of the Pylon Lateral Access-Doors
FOR [9HA2] (VALVE-FAN AIR, ENG2)
TASK 54-51-21-000-802-A	Removal of the Pylon Lateral Access-Doors
TASK 54-51-21-400-802-A	Installation of the Pylon Lateral Access-Doors

3. Job Set-up
Subtask 36-11-54-860-055-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002) or (Ref. AMM TASK 24-41-00-861-002).
(2) Make sure that engine 1(2) is shutdown for a minimum of 5 minutes before you do this procedure.
(3) On AIR COND panel 30VU:

Make sure that the ENG 1(2) BLEED pushbutton-switch is released (OFF legend on).
Make sure that the APU BLEED pushbutton-switch is released (ON legend off).
Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the pneumatic system.

(4) Make sure that you did the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).
(5) On access door 191DB, on the HP ground connector:

Make sure that the WARNING NOTICE(S) is in position to tell persons not to pressurize the pneumatic system.

(6) On FLAPS panel 114VU:
(a) Put the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION in position on the flap/slat control lever (Ref. AMM TASK 27-00-00-480-002).
(7) Put a WARNING NOTICE(S) on the flap/slat control lever to tell persons not to operate the flap/slat controls.

Subtask 36-11-54-865-068-A ** ON A/C NOT FOR ALL

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	AIR BLEED/ENG 2/MONG	3HA2	D12
49VU	AIR BLEED/ENG 1/CTL	2HA1	D11
122VU	AIR BLEED/ENG 1/MONG	3HA1	Z23
122VU	AIR BLEED/ENG 2/CTL	2HA2	Z22

Subtask 36-11-54-010-076-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Make sure that the fan cowl doors are open:
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL and 438AR (Ref. AMM TASK 71-13-00-010-802).
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL and 448AR (Ref. AMM TASK 71-13-00-010-802).

Subtask 36-11-54-040-064-A ** ON A/C NOT FOR ALL

D. Deactivation of the Thrust Reverser (T/R) System for Maintenance

WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.

(1) Do the deactivation of the T/R system for maintenance (Ref. AMM TASK 78-30-00-040-805).

Subtask 36-11-54-010-110-A ** ON A/C NOT FOR ALL

E. Get Access
(1) Make sure that the T/R cowl doors are open:
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL and 452AR (Ref. AMM TASK 78-36-00-010-802).
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL and 462AR (Ref. AMM TASK 78-36-00-010-802).
(2) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position below the engine.

Subtask 36-11-54-010-111-A ** ON A/C NOT FOR ALL

F. Get Access
(1) Make sure that the access door is removed:
(a) FOR [9HA1] (VALVE-FAN AIR, ENG1)

415AR (Ref. AMM TASK 54-51-21-000-802).

(b) FOR [9HA2] (VALVE-FAN AIR, ENG2)

425AR (Ref. AMM TASK 54-51-21-000-802).

4. Procedure
Subtask 36-11-54-420-063-B ** ON A/C NOT FOR ALL

A. Installation of the FAV
(1) If you use the APU to energize the electrical circuits, stop the APU:

For GTCP 36-300 APU (Ref. AMM D/O 49-00-00-86)
For APS 3200 APU (Ref. AMM D/O 49-00-00-86)
For 131-9(A) APU (Ref. AMM TASK 49-00-00-860-009).

(2) In the cockpit, on the SD bleed page:
(a) Make sure that the pressure and the temperature of the bleed-air duct system are in ambient conditions.

WARNING: MAKE SURE THAT THE PNEUMATIC SYSTEM IS DEPRESSURIZED BEFORE YOU START WORK. PRESSURIZED AIR CAN CAUSE INJURY TO PERSONNEL.

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

(3) Clean the component interfaces and the adjacent area.
(4) Do an inspection of the component interfaces and the adjacent area.
(5) Install the FAV (5) on the structure (11) below the thrust reverser as follows:
(a) Make sure that the seal in the cold inlet (28) is in the correct condition.
(b) Carefully engage the FAV (5) in the bleed-air precooler-exchanger cold-inlet (28) with the pins (25) in the pinholes (24).

NOTE: The pins (25) holds the FAV (5) in position in the pin holes (24).

(6) Put the FAV actuator rod in position as follows:
(a) Install the 98D36003004000 BLOCKING DEVICE FAV (29) to lock the FAV (5) in the closed position.
(b) If necessary, adjust the length of the rod (21) to connect the rod to the FAV (5) easily as follows:

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.

1 Remove the lockwire from the nut of the FAV actuator rod (4).
2 Loosen the nut of the FAV actuator rod (4).
3 As necessary, tighten or loosen the FAV actuator rod (4) to adjust the length.
4 Tighten the nut of the FAV actuator rod (4).

5 Install the 14QDC1Wire-Locking Dia: 0.5 mm (0.020 inch) CRES - on the nut of the FAV actuator rod (4).
(c) Put the FAV actuator rod (4) in position on the FAV actuator (1) and the FAV rod (21).
(7) Install the plate (23) and the bolt (22) on the FAV (5) as follows:
(a) Tighten the bolt (22) with your hand, but do not torque at this time.
(8) Install the plate (3) and the bolt (2) on the FAV actuator (1) and the FAV actuator rod (4) as follows:
(a) Tighten the bolt (2) with your hand, but do not torque at this time.
(9) Remove the 98D36003004000 BLOCKING DEVICE FAV (29) from the FAV (5).
(10) TORQUE the bolts (2) and (22) to between 0.38 and 0.31 m.daN (33.63 and 27.43 lbf.in )

maximum.
(11) Assemble the scoop (13) and the FAV (5):
(a) Make sure that the AIPC 36-11-86-03-320 SEAL (16) of the scoop (13) is not damaged. If damaged, replace it with a new seal.
(b) Install a new AIPC 36-11-86-03-350 SEAL (26) in the FAV (5).
(c) Install the clamp (27) on the scoop (13) and the FAV (5) as follows:

NOTE: One more person can help you to install the V-clamp and hold the rear rod.

1 TORQUE the clamp (27) to between 1.41 and 1.3 m.daN (124.78 and 115.04 lbf.in )

.
(d) Identify the tightened union nut of the clamp (27) with a red line (Ref. AMM TASK 20-23-22-910-001).
(12) Put the scoop (13) in position on the structure (11).
(13) Make sure that clearance 'A1' between the scoop (13) and the structure (11) is a minimum of 3 mm (0.1181 in.).
(14) Install the washers (14) and the bolts (15) on the scoop (13) and tighten them.
(15) Put the scoop rod (12) in position on the bracket (8).

NOTE: You can get access to the below part of the left side of the thrust reverser to put the scoop rod (12) in position on the bracket (8) more easily.

(16) Install the bushing (9), washer (7), bolt (10), washer (7) and nut (6) on the bracket (8) as follows:
(a) Tighten the bolt (10) of the scoop rod (12).

NOTE: You can get access to the below part of the left side of the thrust reverser to install the bushing (9), washer (7), bolt (10), washer (7) and nut (6) on the bracket (8) more easily.

(17) Install the washer (18), bolt (17), bonding strap (19) and nut (20) on the FAV (5).
(18) Tighten the bolt (17) and do the electrical bonding (Ref. AMM TASK 20-28-00-912-802).
(19) Apply the Non Hardening Jointing Putty-High Temp. Area - Structure (Material No.06LDG2) on the bonding strap (19), nut (20), washer (18) and bolt (17).

Subtask 36-11-54-865-070-A ** ON A/C NOT FOR ALL

B. 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
49VU	AIR BLEED/ENG 2/MONG	3HA2	D12
49VU	AIR BLEED/ENG 1/CTL	2HA1	D11
122VU	AIR BLEED/ENG 1/MONG	3HA1	Z23
122VU	AIR BLEED/ENG 2/CTL	2HA2	Z22

Subtask 36-11-54-790-053-A ** ON A/C NOT FOR ALL

C. Test
(1) Do the BITE test of the engine bleed air system (Ref. AMM TASK 36-11-00-740-802).

5. Close-up
Subtask 36-11-54-410-099-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 related access door:
(a) FOR [9HA1] (VALVE-FAN AIR, ENG1)

415AR (Ref. AMM TASK 54-51-21-400-802).

(b) FOR [9HA2] (VALVE-FAN AIR, ENG2)

425AR (Ref. AMM TASK 54-51-21-400-802).

Subtask 36-11-54-410-100-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Remove the access platform(s).
(2) Close the T/R cowl doors:
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL and 452AR (Ref. AMM TASK 78-36-00-410-802).
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL and 462AR (Ref. AMM TASK 78-36-00-410-802).

Subtask 36-11-54-440-060-A ** ON A/C NOT FOR ALL

C. Reactivation of the Thrust Reverser for Maintenance
(1) Do the reactivation of the T/R system after maintenance (Ref. AMM TASK 78-30-00-440-805).

Subtask 36-11-54-410-072-A ** ON A/C NOT FOR ALL

D. Close Access
(1) Close the fan cowl doors:
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL and 438AR (Ref. AMM TASK 71-13-00-410-802).
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL and 448AR (Ref. AMM TASK 71-13-00-410-802).
(2) Remove all the fixtures, tools, test and support equipment used during this procedure.
(3) Remove the WARNING NOTICE(S).

Subtask 36-11-54-862-060-A ** ON A/C NOT FOR ALL

E. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002) or (Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 12:38:08 UTC