Removal of the Aft Fixed Fairing

TASK 54-54-00-000-001-A
Removal of the Aft Fixed Fairing

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: 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	CONTAINER 3 L(3/4 USGAL)
No specific	AR	PLUG - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)

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 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 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
TASK 54-53-11-000-002-A	Removal of the Pylon-to-Wing Access Panels
TASK 54-53-11-000-002-B	Removal of the Pylon-to-Wing Access Panels
TASK 54-55-00-000-001-A	Removal of the Aft Movable Fairing
TASK 54-56-00-000-001-A	Removal of the Lower Fairing
TASK 54-56-00-000-002-A	Removal of the Lower Fairing
TASK 78-30-00-040-012-A	Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for 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
Installation of the Hydraulic Lines ** ON A/C NOT FOR ALL
Installation of the Hydraulic Lines ** 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
Attach Fittings on the Aft Fixed Fairing ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 54-54-00-941-050-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Put a WARNING NOTICE(S) in position to tell persons not to start engine 1(2).
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) 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) Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).
(4) Obey the safety procedures of the hydraulic system (Ref. AMM TASK 29-00-00-910-002).

Subtask 54-54-00-869-055-A ** ON A/C NOT FOR ALL

B. Aircraft Stability
(1) Make the aircraft stable (Ref. AMM TASK 05-57-00-200-001).

Subtask 54-54-00-865-050-A ** ON A/C NOT FOR ALL

C. Open, safety and tag 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 54-54-00-040-051-A ** ON A/C NOT FOR ALL

D. 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 the thrust reverser unserviceable for maintenance (Ref. AMM TASK 78-30-00-481-041).

Subtask 54-54-00-040-051-B ** ON A/C NOT FOR ALL

D. 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 the thrust reverser unserviceable for maintenance (Ref. AMM TASK 78-30-00-040-012).

Subtask 54-54-00-860-050-A ** ON A/C NOT FOR ALL

E. 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) Put the related hydraulic system in the depressurized configuration before the maintenance action (Ref. AMM TASK 29-00-00-864-001).
(2) Depressurize the hydraulic reservoir (Ref. AMM TASK 29-14-00-614-001).

Subtask 54-54-00-010-050-A ** ON A/C NOT FOR ALL

F. Get Access
(1) Put an ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position:
(a) For the left pylon, in zone 470.
(b) For the right pylon, in zone 480.
(2) Remove the pylon-to-wing access panels (Ref. AMM TASK 54-53-11-000-002):
(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 54-54-00-010-050-B ** ON A/C NOT FOR ALL

F. Get Access
(1) Put an ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position:
(a) For the left pylon, in zone 470.
(b) For the right pylon, in zone 480.
(2) Remove the pylon-to-wing access panels (Ref. AMM TASK 54-53-11-000-002):
(a) For the left pylon: 471DL 475AL 475BL, 471CR 475AR 475BR
(b) For the right pylon: 481CL 485AL 485BL, 481DR 485AR 485BR.

Subtask 54-54-00-020-050-A ** ON A/C NOT FOR ALL

G. Removal of the Fairings
(1) Remove the aft movable fairing (Ref. AMM TASK 54-55-00-000-001).
(2) Remove the lower fairing (Ref. AMM TASK 54-56-00-000-001).

Subtask 54-54-00-020-050-B ** ON A/C NOT FOR ALL

G. Removal of the Fairings
(1) Remove the aft movable fairing (Ref. AMM TASK 54-55-00-000-001).
(2) Remove the lower fairing (Ref. AMM TASK 54-56-00-000-002).

Subtask 54-54-00-020-052-A ** ON A/C NOT FOR ALL

H. Removal of the Hydraulic Lines

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

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.

(1) Remove the nut (6) and the bolt (5).
(2) Remove the lines (1), (2), (3) and (4).
(3) Put a CONTAINER 3 L(3/4 USGAL) in position to collect the hydraulic fluid.
(4) Disconnect the drain lines (7) and (8).
(5) Put the PLUG-BLANKING in each disconnected line end.

4. Procedure
Subtask 54-54-00-020-053-A ** ON A/C NOT FOR ALL

A. Removal of the Aft Fixed Fairing

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

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

(1) Remove the bolt (24) and the washer (23).
(2) Disconnect the bonding lead (22).
(3) Remove the nuts (20) and the bolts (19).
(4) Disconnect the pylon mount upper-fitting (21) from the aft fixed fairing (10).
(5) Remove the nut (14) and the bolt (13).
(6) Remove the nut (18) and the washer (17).
(7) Remove the bolt (15) and the washer (16).
(8) Remove the nuts (12) and the bolts (11).
(9) Remove the aft fixed fairing (10).

[Rev.10 from 2021] 2026.04.01 02:02:47 UTC