Installation of the Aft Fixed Fairing

TASK 54-54-00-400-001-A
Installation of the Aft Fixed Fairing

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: OBEY THE HYDRAULIC SAFETY PROCEDURES. WORK ON THE HYDRAULIC SYSTEMS CAN BE DANGEROUS.

CAUTION: THIS PART IS A REMOVABLE STRUCTURAL COMPONENT (RSC), WHICH CAN BE MOVED BETWEEN AIRCRAFT. THUS IT CAN HAVE DIFFERENT OPERATION CONDITIONS AND A DIFFERENT LIFE RECORD (FLIGHT HOURS/FLIGHT CYCLES/CALENDAR) FROM THE AIRCRAFT IT IS INSTALLED ON OR REMOVED FROM. THE OPERATOR IS RESPONSIBLE FOR THE SPECIFIC TRACKING AND CONTINUED AIRWORTHINESS OF REMOVABLE STRUCTURAL COMPONENTS. INCORRECT MAINTENANCE OF THESE COMPONENTS CAN CAUSE A RISK FOR THE FLIGHT SAFETY.

ZONE: 470
ZONE: 480

1. Reason for the Job
There is an alternative method for this procedure. This task gives one of the methods. For the other method, refer to the other task in this page block.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 1.65 and 1.35 m.daN (146.02 and 119.47 lbf.in )
No specific	Torque wrench: range to between 3 and 2.6 m.daN (22.12 and 19.17 lbf.ft )
No specific	Torque wrench: range to between 4.1 and 3.6 m.daN (30.24 and 26.55 lbf.ft )

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
470	ENGINE 1 AFT PYLON
480	ENGINE 2 AFT PYLON
475AL, 475BL, 485AL, 485BL
471CL, 472BR, 475CL, 476AR, 476BR, 476CR, 481BL, 482CR, 485CL, 486AR, 486BR, 486CR
471CR, 471DL, 475AR, 475BR, 481CL, 481DR, 485AR, 485BR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 05-57-00-200-001-A	Aircraft Stability
TASK 05-57-00-200-001-B	Aircraft Stability
TASK 05-57-00-200-001-C	Aircraft Stability
TASK 20-21-12-911-001-A	Tightening Torques for Pipe Unions (not for OXYGEN Unions)
TASK 20-28-00-912-802-A	Electrical Bonding - General Maintenance Procedure
TASK 29-00-00-864-001-A	Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 29-00-00-910-002-A	Safety Procedures of the Hydraulic System
TASK 29-10-00-863-001-A	Pressurize the Green Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-10-00-863-002-A	Pressurize the Yellow Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-10-00-863-003-A	Pressurize the Blue Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-10-00-863-003-A-01	Pressurize the Blue Hydraulic System with the Blue Electric Pump
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
TASK 29-14-00-614-002-A	Pressurization of the Hydraulic Reservoirs through the Ground Connector
TASK 29-14-00-614-002-A-01	Pressurization of the Hydraulic Reservoirs with the Auxiliary Power Unit (APU)
TASK 29-23-00-863-001-A	Pressurize the Green Hydraulic System from the Yellow Hydraulic System through the PTU with the Electric Pump
TASK 54-53-11-400-002-A	Installation of the Pylon-to-Wing Access Panels
TASK 54-53-11-400-002-B	Installation of the Pylon-to-Wing Access Panels
TASK 54-55-00-400-001-A	Installation of the Aft Movable Fairing
TASK 54-56-00-400-001-A	Installation of the Lower Fairing
TASK 54-56-00-400-002-A	Installation of the Lower Fairing
TASK 71-00-00-710-001-A	Dry Motoring Check
TASK 71-00-00-710-001-B	Dry Motoring Check
TASK 71-00-00-710-045-A	Test No.1 : Dry Motor Leak Check
TASK 78-30-00-040-012-A	Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance
TASK 78-30-00-081-041-A	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-081-041-B	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-440-012-A	Re-activation of the Thrust Reverser Hydraulic Control Unit (HCU) after Ground Maintenance
TASK 78-30-00-481-041-A	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-30-00-481-041-B	Make the Thrust Reverser Unserviceable for Maintenance
Attach Fittings on the Aft Fixed Fairing ** ON A/C NOT FOR ALL
Attach Fittings on the Aft Fixed Fairing ** ON A/C NOT FOR ALL
Attach Fittings on the Aft Fixed Fairing ** ON A/C NOT FOR ALL
Installation of the Hydraulic Lines ** ON A/C NOT FOR ALL
Installation of the Hydraulic Lines ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 54-54-00-860-051-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that a WARNING NOTICE(S) is in position in the cockpit to tell persons not to start engine 1(2).
(2) On overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize FADEC 1(2).
(3) Make sure that you obeyed the instructions of the hydraulic safety procedure (Ref. AMM TASK 29-00-00-910-002).
(4) Make sure that the aircraft is stable (Ref. AMM TASK 05-57-00-200-001).
(5) Make sure that the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE is in position:
(a) For the left pylon, in zone 470
(b) For the right pylon, in zone 480.

Subtask 54-54-00-865-051-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	HYD/HYD PWR/B WARN/& CTL	2702GJ	C12
121VU	HYDRAULIC/HYD POWER/Y	3803GX	N30
123VU	B HYD/ELEC PUMP	2701GJ	AB09
123VU	Y HYD/ELEC/PUMP	3802GX	AB06
123VU	Y HYD/ELEC/ELEC PUMP/NORM	3801GX	AB03

Subtask 54-54-00-040-067-A ** ON A/C NOT FOR ALL

C. Deactivation of the Thrust Reverser

WARNING: MAKE SURE THAT THE THRUST REVERSER IS LOCKED. IF NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE INJURY TO PERSONNEL AND/OR DAMAGE TO THE REVERSER.

(1) Make sure that the thrust reverser is unserviceable for maintenance (Ref. AMM TASK 78-30-00-481-041).

Subtask 54-54-00-040-067-B ** ON A/C NOT FOR ALL

C. Deactivation of the Thrust Reverser

WARNING: MAKE SURE THAT THE THRUST REVERSER IS LOCKED. IF NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE INJURY TO PERSONNEL AND/OR DAMAGE TO THE REVERSER.

(1) Make sure that the thrust reverser is unserviceable for maintenance (Ref. AMM TASK 78-30-00-040-012).

Subtask 54-54-00-864-050-A ** ON A/C NOT FOR ALL

D. Depressurization of the Hydraulic Systems

WARNING: MAKE SURE YOU DEPRESSURIZED THE HYDRAULIC SYSTEM. IF YOU LOOSEN A HYDRAULIC TUBE FITTING WHEN THERE IS PRESSURE IN THE HYDRAULIC SYSTEM, YOU CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.

(1) Make sure that the related hydraulic system is in the depressurized configuration before the maintenance action (Ref. AMM TASK 29-00-00-864-001).
(2) Make sure that the hydraulic reservoir is depressurized (Ref. AMM TASK 29-14-00-614-001).

4. Procedure
Subtask 54-54-00-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Aft Fixed Fairing

Attach Fittings on the Aft Fixed Fairing ** ON A/C NOT FOR ALL

NOTE: Two persons are necessary to install the aft fixed fairing (10).

(1) Put the aft fixed fairing (10) in position.
(2) Make sure that the shackles are in clean and correct condition.
(3) Install the bolts (11) and the nuts (12).
(4) Install the washer (16) and the bolt (15).
(5) Install the washer (17) and the nut (18).
(6) Install the bolt (13) and the nut (14).
(7) Put the pylon mount upper-fitting (21) in position.
(8) Install the bolts (19) and the nuts (20).
(9) Tighten the nuts (20).
(10) TORQUE the nuts (12) to between 3 and 2.6 m.daN (22.12 and 19.17 lbf.ft )

.
(11) TORQUE the nut (18) to between 4.1 and 3.6 m.daN (30.24 and 26.55 lbf.ft )

.
(12) TORQUE the nut (14) to between 1.65 and 1.35 m.daN (146.02 and 119.47 lbf.in )

.
(13) Put the bonding lead (22) in position.
(14) Install the washer (23) and the bolt (24).
(15) Tighten the bolt (24).
(16) When you install the bolt (24), do the electrical bonding at the applicable location (Ref. AMM TASK 20-28-00-912-802).

Subtask 54-54-00-420-052-A ** ON A/C NOT FOR ALL

B. Installation of the Hydraulic Lines

Installation of the Hydraulic Lines ** ON A/C NOT FOR ALL

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.

(1) Remove the blanking plugs from the disconnected line ends.
(2) Connect the drain lines (7) and (8) (Ref. AMM TASK 20-21-12-911-001).
(3) Install the lines (1), (2), (3) and (4).
(4) Make sure that 3 mm (0.12 in.) clearance between the hydraulic lines (1) and (2).
(5) Install the bolt (5). Install the nut (6) and tighten it.

Subtask 54-54-00-710-050-A ** ON A/C NOT FOR ALL

C. Operational Test of the Hydraulic System
(1) Do a dry motoring (Ref. AMM TASK 71-00-00-710-001).
(2) Pressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-863-001) or (Ref. AMM TASK 29-23-00-863-001).
(3) Pressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-863-002).
(4) Pressurize the Blue hydraulic system (Ref. AMM TASK 29-10-00-863-003).
(5) Pressurize the hydraulic reservoir system (Ref. AMM TASK 29-14-00-614-002).
(6) Make sure that the hydraulic lines (1), (2), (3) and (4) are sealed.

Subtask 54-54-00-710-050-B ** ON A/C NOT FOR ALL

C. Operational Test of the Hydraulic System
(1) Do a dry motoring (Ref. AMM TASK 71-00-00-710-045).
(2) Pressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-863-001) or (Ref. AMM TASK 29-23-00-863-001).
(3) Pressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-863-002).
(4) Pressurize the Blue hydraulic system (Ref. AMM TASK 29-10-00-863-003).
(5) Pressurize the hydraulic reservoir system (Ref. AMM TASK 29-14-00-614-002).
(6) Make sure that the hydraulic lines (1), (2), (3) and (4) are sealed.

5. Close-up
Subtask 54-54-00-420-053-A ** ON A/C NOT FOR ALL

A. Installation of the Fairings
(1) Install the lower fairing (Ref. AMM TASK 54-56-00-400-001).
(2) Install the aft movable fairing (Ref. AMM TASK 54-55-00-400-001).

Subtask 54-54-00-420-053-B ** ON A/C NOT FOR ALL

A. Installation of the Fairings
(1) Install the lower fairing (Ref. AMM TASK 54-56-00-400-002).
(2) Install the aft movable fairing (Ref. AMM TASK 54-55-00-400-001).

Subtask 54-54-00-410-050-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Install the pylon-to-wing access panels (Ref. AMM TASK 54-53-11-400-002):
(a) For the left pylon: 471CL 475AL 475BL 475CL, 472BR, 476AR 476BR 476CR
(b) For the right pylon: 481BL 485AL 485BL 485CL, 482CR 486AR 486BR 486CR.

Subtask 54-54-00-410-050-B ** ON A/C NOT FOR ALL

B. Close Access
(1) Install the pylon-to-wing access panels (Ref. AMM TASK 54-53-11-400-002):
(a) For the left pylon: 471DL 475AL 475BL, 471CR 475AR 475BR
(b) For the right pylon: 481CL 485AL 485BL, 481DR 485AR 485BR.

Subtask 54-54-00-860-061-A ** ON A/C NOT FOR ALL

C. Put the hydraulic systems back to their initial configuration.

Subtask 54-54-00-440-051-A ** ON A/C NOT FOR ALL

D. Reactivation of the thrust reverser
(1) Make the thrust reverser serviceable after maintenance (Ref. AMM TASK 78-30-00-081-041).

Subtask 54-54-00-440-051-B ** ON A/C NOT FOR ALL

D. Reactivation of the thrust reverser
(1) Make the thrust reverser serviceable after maintenance (Ref. AMM TASK 78-30-00-440-012).

Subtask 54-54-00-865-054-A ** ON A/C NOT FOR ALL

E. 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	HYD/HYD PWR/B WARN/& CTL	2702GJ	C12
121VU	HYDRAULIC/HYD POWER/Y	3803GX	N30
123VU	B HYD/ELEC PUMP	2701GJ	AB09
123VU	Y HYD/ELEC/PUMP	3802GX	AB06
123VU	Y HYD/ELEC/ELEC PUMP/NORM	3801GX	AB03

Subtask 54-54-00-860-057-A ** ON A/C NOT FOR ALL

F. Aircraft Maintenance Configuration
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 02:02:49 UTC