Detailed Inspection of the Lower Fairing Firewall-Seals

TASK 54-57-22-220-801-A
Detailed Inspection of the Lower Fairing Firewall-Seals

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

ZONE: 410
ZONE: 420

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 3M (10 FT)- ADJUSTABLE
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
410	ENG 1 PYLON BOX AND FORWARD FAIRING
420	ENG 2 PYLON BOX AND FORWARD FAIRING
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 54-57-22-000-004-A	Removal of the Lower Fairing Firewall Seals
TASK 54-57-22-400-004-A	Installation of the Lower Fairing Firewall Seals
TASK 71-00-20-000-040-A	Removal of the Power Plant
TASK 71-00-20-000-040-A-01	Removal of the Power Plant with the Engine Positioner TWW 75E (MIAG)
TASK 71-00-20-400-040-A	Installation of the Power Plant
TASK 71-00-20-400-040-A-01	Installation of the Power Plant with the Engine Positioner TWW 75E (MIAG)
TASK 71-13-11-000-010-A	Removal of the Left Fan Cowl 437AL(447AL).
TASK 71-13-11-400-010-A	Installation of the Left Fan Cowl
TASK 71-13-16-000-010-B	Removal of the Right Fan Cowl (438AR, 448AR)
TASK 71-13-16-400-010-B	Installation of the Right Fan Cowl (438AR, 448AR)
TASK 78-11-11-000-010-A	Removal of the Common Nozzle Assembly
TASK 78-11-11-400-010-A	Installation of the Common Nozzle Assembly (CNA)
TASK 78-30-00-040-012-A	Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance
TASK 78-30-00-440-012-A	Re-activation of the Thrust Reverser Hydraulic Control Unit (HCU) after Ground Maintenance
TASK 78-32-01-000-010-A	Removal of the Left Thrust Reverser Half - Eng No. 1
TASK 78-32-01-400-010-A	Installation of the Left Thrust Reverser Half - Eng No. 1
TASK 78-32-02-000-010-A	Removal of the Left Thrust Reverser Half - Eng No. 2
TASK 78-32-02-400-010-A	Installation of the Left Thrust Reverser Half - Eng No. 2
TASK 78-32-03-000-010-A	Removal of the Right Thrust Reverser Half - Eng No. 1
TASK 78-32-03-400-010-A	Installation of the Right Thrust Reverser Half - Eng No. 1
TASK 78-32-04-000-010-A	Removal of the Right Thrust Reverser Half - Eng. No. 2
TASK 78-32-04-400-010-A	Installation of the Right Reverser Half - Eng. No. 2
Inspection of the Lower Fairing Firewall-Seals

3. Job Set-up
Subtask 54-57-22-941-098-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).

Subtask 54-57-22-040-086-A ** ON A/C NOT FOR ALL

B. 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 54-57-22-020-083-A ** ON A/C NOT FOR ALL

C. Removal of the Components
(1) Remove the fan cowls (Ref. AMM TASK 71-13-11-000-010) (Ref. AMM TASK 71-13-16-000-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL, 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL, 448AR.
(2) Remove the thrust reverser halves (Ref. AMM TASK 78-32-01-000-010) (Ref. AMM TASK 78-32-02-000-010) (Ref. AMM TASK 78-32-03-000-010) (Ref. AMM TASK 78-32-04-000-010):
(a) FOR [1000EM1] (ENGINE-1)
451AL, 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL, 462AR.
(3) Remove the common nozzle assembly (Ref. AMM TASK 78-11-11-000-010).
(4) Remove the power plant (Ref. AMM TASK 71-00-20-000-040).

Subtask 54-57-22-010-082-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position:
(a) For the left pylon, in zone 410
(b) For the right pylon, in zone 420.

Subtask 54-57-22-110-058-A ** ON A/C NOT FOR ALL

E. Preparation of the Inspection Area
(1) Make sure that the inspection area is sufficiently clean to do a satisfactory inspection of the area.
(2) If it is not, clean the inspection area with Non Aqueous Cleaner-General - - (Material No.08BAA9) and a Textile-Lint free Cotton - (Material No.14SBA1) .

4. Procedure
Subtask 54-57-22-220-052-A ** ON A/C NOT FOR ALL

A. Inspection

Inspection of the Lower Fairing Firewall-Seals ** ON A/C NOT FOR ALL

(1) Do a detailed inspection of the lower fairing firewall-seals (1) and (2).
(2) Make sure that there is no wear, damage or degradation.
(3) If you find wear, damage or degradation, replace the lower fairing firewall-seals (1) and (2) (Ref. AMM TASK 54-57-22-000-004) and (Ref. AMM TASK 54-57-22-400-004).

5. Close-up
Subtask 54-57-22-420-081-A ** ON A/C NOT FOR ALL

A. Installation of the Components
(1) Install the power plant (Ref. AMM TASK 71-00-20-400-040).
(2) Install the common nozzle assembly (Ref. AMM TASK 78-11-11-400-010).
(3) Install the thrust reverser halves (Ref. AMM TASK 78-32-01-400-010) (Ref. AMM TASK 78-32-02-400-010) (Ref. AMM TASK 78-32-03-400-010) (Ref. AMM TASK 78-32-04-400-010):
(a) FOR [1000EM1] (ENGINE-1)
451AL, 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL, 462AR.
(4) Install the fan cowls (Ref. AMM TASK 71-13-11-400-010) (Ref. AMM TASK 71-13-16-400-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL, 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL, 448AR.

Subtask 54-57-22-440-070-A ** ON A/C NOT FOR ALL

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

Subtask 54-57-22-410-076-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the WARNING NOTICE(S).
(3) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.01 02:04:31 UTC