DOC AIRBUS | AMM A320FInstallation of the Shroud and the Backing Plate
TASK 28-25-49-400-001-A
Installation of the Shroud and the Backing Plate
Self Explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Referenced Information
3. Job Set-up
Subtask 28-25-49-941-053-A
Subtask 28-25-49-420-051-A
Subtask 28-25-49-865-052-A
[Rev.10 from 2021]
2026.04.02 06:17:41 UTC
Installation of the Shroud and the Backing Plate
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
WARNING:
MAKE SURE THAT THE FLIGHT CONTROL SAFETY-LOCKS AND THE WARNING NOTICES ARE IN POSITION.
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.
1. Reason for the JobSelf Explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | ACCESS PLATFORM 4M (13 FT) |
| No specific | AR | SAFETY BARRIER(S) |
| No specific | AR | SCRAPER - NON METALLIC |
| No specific | AR | WARNING NOTICE(S) |
| 98D27803500001 | 1 | LOCKING TOOL ZERO POS |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.06ABA1) | Polysulfide Sealant-Fuel Tank Brushable - |
| (Material No.08BAA9) | Non Aqueous Cleaner-General - - |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 28-00-00-910-001-A | Fuel Safety Procedures |
| TASK 57-41-37-000-006-A | Removal of the Access Panels |
| TASK 57-41-37-400-006-A | Installation of the Access Panels |
Subtask 28-25-49-941-053-A
A. Safety Precautions
(2) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(3) Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the slat system.
(4) Make sure that the 98D27803500001 LOCKING TOOL ZERO POS is on the slat/flap control lever.
Subtask 28-25-49-865-051-A WARNING:
OBEY THE FUEL SAFETY PROCEDURES.
(1) You must obey the fuel safety procedures when you do work on the fuel system (Ref. AMM TASK 28-00-00-910-001). (2) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(3) Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the slat system.
(4) Make sure that the 98D27803500001 LOCKING TOOL ZERO POS is on the slat/flap control lever.
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
Subtask 28-25-49-860-051-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B06 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B01 |
| ** ON A/C ALL | |||
| 121VU | FLIGHT CONTROLS/SLT/CTL/SYS2 | 7CV | R21 |
C. Aircraft Maintenance Configuration
Shroud and Backing Plate - Right Wing ** ON A/C NOT FOR ALL
Shroud and Backing Plate - Left and Right Wings ** ON A/C NOT FOR ALL
(1) Make sure that the ACCESS PLATFORM 4M (13 FT) is below the applicable refuel coupling.
(2) Make sure that the access panels (4) are removed (Ref. AMM TASK 57-41-37-000-006).
4. Procedure Shroud and Backing Plate - Right Wing ** ON A/C NOT FOR ALL Shroud and Backing Plate - Left and Right Wings ** ON A/C NOT FOR ALL (2) Make sure that the access panels (4) are removed (Ref. AMM TASK 57-41-37-000-006).
Subtask 28-25-49-420-051-A
A. Preparation for Installation
(1) Use a SCRAPER - NON METALLIC to clean the used sealant from the hole in the access panel (4).
(2) Use a clean Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) to clean the component interface and the adjacent area.
(3) Do an inspection of the component interfaces and the adjacent area.
(4) Make sure that the parts retained from the removed component are clean and in the correct condition.
Subtask 28-25-49-420-050-A (1) Use a SCRAPER - NON METALLIC to clean the used sealant from the hole in the access panel (4).
(2) Use a clean Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) to clean the component interface and the adjacent area.
(3) Do an inspection of the component interfaces and the adjacent area.
(4) Make sure that the parts retained from the removed component are clean and in the correct condition.
B. Installation of the Shroud and the Backing Plate
(1) Install the shroud (3) on the access panel (4).
(2) Install the backing plate (2) on the shroud (3).
(3) Loosely install the bolts (5).
Subtask 28-25-49-410-050-A ** ON A/C NOT FOR ALL (1) Install the shroud (3) on the access panel (4).
(2) Install the backing plate (2) on the shroud (3).
(3) Loosely install the bolts (5).
C. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access panel (4) (Ref. AMM TASK 57-41-37-400-006).
Subtask 28-25-49-410-050-B ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access panel (4) (Ref. AMM TASK 57-41-37-400-006).
C. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the applicable access panel (4) (Ref. AMM TASK 57-41-37-400-006).
Subtask 28-25-49-820-050-A (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the applicable access panel (4) (Ref. AMM TASK 57-41-37-400-006).
D. Adjustment of the Shroud
(1) Adjust the shroud (3) to get DIM 'a' equal around the coupling cap (1) +0.5 -0.5 mm (+0.0196 -0.0196 in).
(2) Tighten the bolts (5).
Subtask 28-25-49-914-050-A (1) Adjust the shroud (3) to get DIM 'a' equal around the coupling cap (1) +0.5 -0.5 mm (+0.0196 -0.0196 in).
(2) Tighten the bolts (5).
E. Application of Special Materials
(1) Apply a bead of Polysulfide Sealant-Fuel Tank Brushable - (Material No.06ABA1) in the space 'X'.
5. Close-up(1) Apply a bead of Polysulfide Sealant-Fuel Tank Brushable - (Material No.06ABA1) in the space 'X'.
Subtask 28-25-49-865-052-A
A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 28-25-49-942-050-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B06 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B01 |
| ** ON A/C ALL | |||
| 121VU | FLIGHT CONTROLS/SLT/CTL/SYS2 | 7CV | R21 |
B. Removal of Equipment
(1) Remove the safety barriers.
(2) Remove the access platform(s).
(3) Remove the 98D27803500001 LOCKING TOOL ZERO POS from the flap/slat control lever.
(4) Remove the WARNING NOTICE(S).
(5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(1) Remove the safety barriers.
(2) Remove the access platform(s).
(3) Remove the 98D27803500001 LOCKING TOOL ZERO POS from the flap/slat control lever.
(4) Remove the WARNING NOTICE(S).
(5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.