W DOC AIRBUS | AMM A320F

Installation of the Access Panel 521AT(621AT)

TASK 57-41-37-400-802-A
Installation of the Access Panel 521AT(621AT)

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: 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: 521
ZONE: 621
1. Reason for the Job
Self explanatory
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE
No specific
AR
SAFETY BARRIER(S)
No specific
AR
SCRAPER - NON METALLIC
No specific
AR
WARNING NOTICE(S)
98D27803000000
1
LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.06AAB1)
Polysulfide Sealant-General Purpose Fillet -
(Material No.08BAA9)
Non Aqueous Cleaner-General - -
(Material No.14DDB1)
Release Agent-- PTFE Loaded -
(Material No.14SBA1)
Textile-Lint free Cotton -
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
521
INBOARD FIXED L.E STRUCTURE
621
INBOARD FIXED L.E STRUCTURE
 D. Referenced Information
REFERENCE
DESIGNATION
TASK 20-21-11-911-001-A
Tightening Torques for Standard Threaded Fasteners
TASK 27-80-00-866-004-A
Extending the Slats on the Ground
TASK 27-80-00-866-005-A
Retracting the Slats on the Ground
F Access Panel 521AT(621AT) - Location and Detail
3. Job Set-up
Subtask 57-41-37-941-081-A
A. Safety Precautions
   (1) Make sure that the SAFETY BARRIER(S) are in position.
Subtask 57-41-37-860-080-A
B. Aircraft Maintenance Configuration
   (1) Make sure that the slats are fully extended (Ref. AMM TASK 27-80-00-866-004).
   (2) Make sure that the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION is installed on the flap/slat control lever.
   (3) Make sure that the WARNING NOTICE(S) is in position in the cockpit to tell persons not to operate the slats.
Subtask 57-41-37-865-100-A
C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/SLT/CTL AND MONG/SYS15CVB06
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/SLT/CTL AND MONG/SYS15CVB01
** ON A/C ALL
121VUFLIGHT CONTROLS/SLT/CTL/SYS27CVR21
Subtask 57-41-37-010-069-A
D. Get Access
   (1) Make sure that the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE is in position below the applicable access panel 521AT(621AT).
4. Procedure
Subtask 57-41-37-210-068-A
A. Preparation for Installation
   (1) Do an inspection of the component interfaces and the adjacent area.
   (2) Use a SCRAPER - NON METALLIC and a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) to clean:
  • The interface of the aircraft structure
  • The mating surfaces of the access panel (2).
   (3) Apply Polysulfide Sealant-General Purpose Fillet - (Material No.06AAB1) to the interface of the aircraft structure.
   (4) Apply Release Agent-- PTFE Loaded - (Material No.14DDB1) to the inner surface of the access panel (2).
   (5) Make sure that the work area is clean and clear of tools and other items.
Subtask 57-41-37-420-068-A
B. Installation of the Access Panel 521AT(621AT)
F Access Panel 521AT(621AT) - Location and Detail
   (1) Hold the access panel (2) in position and install the bolts (1).
   (2) Torque the bolts (1) (Ref. AMM TASK 20-21-11-911-001).
5. Close-up
Subtask 57-41-37-865-101-A
A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/SLT/CTL AND MONG/SYS15CVB06
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/SLT/CTL AND MONG/SYS15CVB01
** ON A/C ALL
121VUFLIGHT CONTROLS/SLT/CTL/SYS27CVR21
Subtask 57-41-37-410-066-A
B. Close Access
   (1) Remove the access platform(s).
Subtask 57-41-37-860-081-A
C. Aircraft Maintenance Configuration
   (1) Remove the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION from the flap/slat control lever.
   (2) Retract the slats (Ref. AMM TASK 27-80-00-866-005).
Subtask 57-41-37-942-069-A
D. Removal of Equipment
   (1) Remove the safety barriers.
   (2) Remove the WARNING NOTICE(S).
   (3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
[Rev.10 from 2021] 2026.04.01 03:53:18 UTC
"Aviabrain" 2025