Reactivation of the Movable-Fairing Top-Cover

TASK 57-55-00-440-002-A
Reactivation of the Movable-Fairing Top-Cover

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: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.

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

CAUTION: BE CAREFUL WHEN YOU DO MAINTENANCE TASKS ON THE WING TRAILING EDGE:

DO NOT CAUSE DAMAGE TO THE ELECTRICAL CABLE RACEWAYS.
DO NOT CAUSE DAMAGE TO THE ELECTRICAL CABLE INSTALLATIONS.
MAKE SURE THAT THE ELECTRICAL CABLES ARE INSTALLED CORRECTLY. INCORRECT INSTALLATION CAN CAUSE DAMAGE.

1. Reason for the Job
CDL 27-06
Flap Track Fairing Rear Top Cover and Tail Cone
(Old CDL reference: 27-6)
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	SPATULA - NON METALLIC
No specific	AR	WARNING NOTICE(S)
98D27803500001	1	LOCKING TOOL ZERO POS

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.06AAB1)	Polysulfide Sealant-General Purpose Fillet -
(Material No.06AEA1)	Polysulfide Sealant-Low Adhesion Brushable -
(Material No.06LCG9)	Non Hardening Jointing Putty-Medium Temp. Area - -
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14DBB1)	Release Agent-- Liquid Wax -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Referenced Information

REFERENCE	DESIGNATION
TASK 20-28-00-912-802-A	Electrical Bonding - General Maintenance Procedure
TASK 27-50-00-866-009-A	Retraction of the Flaps on the Ground
TASK 27-50-00-866-009-A-01	Retraction of the Flaps/Slats on the Ground
Top-Cover and Tail-Cone Assembly ** ON A/C NOT FOR ALL
Top-Cover and Tail-Cone Assembly ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 57-55-00-941-053-A

A. Safety Precautions
(1) Put WARNING NOTICE(S) in the cockpit to tell persons not to operate the flaps or slats.
(2) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.

Subtask 57-55-00-860-053-A

B. Aircraft Maintenance Configuration
(1) Retract the flaps (Ref. AMM TASK 27-50-00-866-009).
(2) Install the 98D27803500001 LOCKING TOOL ZERO POS on the flap/slat control-lever.
(3) Put the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE below the applicable movable-fairing at flap track 2, 3 or 4, zone 531 (631), 532 (632) or 533 (633).

Subtask 57-55-00-865-056-A

C. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1	6CV	B07
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1	6CV	B02
** ON A/C ALL
121VU	FLIGHT CONTROLS/FLP/CTL AND/MONG/SYS2	8CV	Q21

4. Procedure

CAUTION: BE CAREFUL WHEN YOU DO MAINTENANCE TASKS ON THE WING TRAILING EDGE:

DO NOT CAUSE DAMAGE TO THE ELECTRICAL CABLE RACEWAYS.
DO NOT CAUSE DAMAGE TO THE ELECTRICAL CABLE INSTALLATIONS.
MAKE SURE THAT THE ELECTRICAL CABLES ARE INSTALLED CORRECTLY. INCORRECT INSTALLATION CAN CAUSE DAMAGE.

Subtask 57-55-00-110-050-B

A. Preparation for Reactivation
(1) Use a Textile-Lint free Cotton - (Material No.14SBA1) , made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) to clean:

the interface surface of the top-cover (1)
the interface surface of the tail-cone (4)
the interface surface of the movable-fairing (7)
the screws (2),(3) and (5) and the nuts (6).

(2) Do an inspection of the component interfaces and the adjacent area.
(3) Make sure that the parts retained from the removed component are clean, dry and in the correct condition.
(4) Make sure that the surface finishes of the top-cover (1), the tail-cone (4) and the movable-fairing (7) are to the correct condition.
(5) Apply Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) to the screws (2) and (3), but not the threads.
(6) Apply Release Agent-- Liquid Wax - (Material No.14DBB1) to the interfaces of the top-cover (1).
(7) Apply a thin layer of Polysulfide Sealant-Low Adhesion Brushable - (Material No.06AEA1) to the interfaces of:

the top-cover (1)
the movable-fairing (7)
the tail-cone (4), the screws (5) and the nuts (6), but not to the threads.

Subtask 57-55-00-440-050-A ** ON A/C NOT FOR ALL

B. Reactivation of the Movable-Fairing Top-Cover
(1) Install the tail-cone (4) with the screws (5) and the nuts (6).
(2) Install the top-cover (1) with the screws (2) and (3).
(3) Remove the deactivation notice from the cockpit.
(4) Write down in the aircraft log that the top-cover and the tail-cone are reactivated.
(5) Make sure that the dimensions at dim 'X' are between 0.5 mm (0.02 in.) and 3 mm (0.12 in.).
(6) Use a Textile-Lint free Cotton - (Material No.14SBA1) , made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) to clean the groove between the movable-fairing (7) and the tail-cone (4).
(7) Apply a bead of Polysulfide Sealant-General Purpose Fillet - (Material No.06AAB1) or Polysulfide Sealant-General Purpose Fillet - (Material No.06AAB1) into the groove between the tail-cone (4), the movable-fairing (7) and the top-cover (1).
(8) Use Non Aqueous Cleaner-General - - (Material No.08BAA9) and a SPATULA - NON METALLIC to make the bead smooth and level.
(9) Make sure that the bonding resistance (Ref. AMM TASK 20-28-00-912-802) is correct at:

the static-discharger retainer (8) and an adjacent metal part of the aircraft structure.

(10) When the new sealant bead is dry, paint it with the applicable color.
(11) Write in the aircraft logbook that the movable-fairing top-cover has been reactivated.

Subtask 57-55-00-440-050-B ** ON A/C NOT FOR ALL

B. Reactivation of the Movable-Fairing Top-Cover
(1) Install the tail-cone (4) with the screws (5) and the nuts (6).
(2) Install the top-cover (1) with the screws (2) and (3).
(3) Remove the deactivation notice from the cockpit.
(4) Write down in the aircraft log that the top-cover (1) and the tail-cone (4) are reactivated.
(5) Make sure that the dimensions X are between 0.5 mm (0.02 in.) and 3 mm (0.12 in.).
(6) Use a Textile-Lint free Cotton - (Material No.14SBA1) , made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) to clean the groove between the movable-fairing (7) and the tail-cone (4).
(7) Apply a bead of Polysulfide Sealant-General Purpose Fillet - (Material No.06AAB1) or Polysulfide Sealant-General Purpose Fillet - (Material No.06AAB1) into the groove between the tail-cone (4), the movable-fairing (7) and the top-cover (1).
(8) Use Non Aqueous Cleaner-General - - (Material No.08BAA9) and a SPATULA - NON METALLIC to make the bead smooth and level.
(9) When the new sealant bead is dry, paint it with the applicable color.
(10) Write in the aircraft logbook that the movable-fairing top-cover is reactivated.

5. Close-up
Subtask 57-55-00-865-057-A

A. 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	FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1	6CV	B07
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1	6CV	B02
** ON A/C ALL
121VU	FLIGHT CONTROLS/FLP/CTL AND/MONG/SYS2	8CV	Q21

Subtask 57-55-00-942-053-A

B. Removal of Equipment
(1) Remove the 98D27803500001 LOCKING TOOL ZERO POS from the flap/slat control-lever.
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Remove the WARNING NOTICE(S).
(4) Remove the safety barriers.
(5) Remove the access platform(s).
(6) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.02 06:31:25 UTC