DOC AIRBUS | AMM A320FRepair of the Cockpit-Door Upper Edge
TASK 52-51-00-300-001-A
Repair of the Cockpit-Door Upper Edge
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 52-51-00-010-056-A
Subtask 52-51-00-350-050-A
Subtask 52-51-00-410-052-A
[Rev.10 from 2021]
2026.04.02 06:28:24 UTC
Repair of the Cockpit-Door Upper Edge
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | CLOTH-EMERY, FINE |
| No specific | 1 | FILE - ROUND |
| No specific | 1 | PAD - ABRASIVE |
| No specific | 1 | PAPER - ABRASIVE, FINE |
| No specific | 1 | TAPE - ADHESIVE |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.05EJL9) | Epoxy Adhesive-Metal to metal - Legacy |
| (Material No.08BAA9) | Non Aqueous Cleaner-General - - |
| (Material No.10ABC1) | Surface Pretreatment-Light Alloys Chemical Conversion Yellow - |
| (Material No.13FBC6) | Paste Adhesive-Epoxy Core Restoration - |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| No specific | AMS 5518- .008 - metal sheet |
| No specific | LN9456E (WL1.4324.6) - metal strip |
| No specific | grade 80 to 150 abrasive cloth |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 33-21-12-400-001-A | Installation of the Cabin Entrance Light Dimming Switch |
| TASK 52-51-11-960-802-A | Replacement of the Cockpit-Door Aluminum Profile |
Repair of the Cockpit-Door Upper EdgeSubtask 52-51-00-010-056-A
A. Get Access
(1) Open the cockpit door.
4. Procedure(1) Open the cockpit door.
Subtask 52-51-00-350-050-A
A. Repair of the Cockpit-Door Upper Edge
(1) Examine the aluminum profile (3) for damage.
(2) Measure the damage found.
(a) Hand-blending:
1 Use the CLOTH-EMERY, FINE, PAD - ABRASIVE or the PAPER - ABRASIVE, FINE, to abrade the area to a maximum of 10 mm (0.394 in.) around the damage.
2 Make sure that you removed all the damage.
3 Apply Surface Pretreatment-Light Alloys Chemical Conversion Yellow - (Material No.10ABC1) where necessary.
(b) Blending procedure with a rotary file:
1 If depth T is large, use the FILE - ROUND to remove as much material as necessary.
2 Make sure that the thickness of the edge channel is 2 mm (0.079 in.).
3 Abrade the area to a maximum of 10 mm (0.394 in.) around the damage.
4 Make sure that you removed all the damage.
5 Apply Surface Pretreatment-Light Alloys Chemical Conversion Yellow - (Material No.10ABC1) where necessary.
(4) If depth T is more than 50% of the initial profile thickness of 1 mm (0.0394 in.), repair the damaged area.
(a) If you find many types of damage, replace the aluminum profile (3) (Ref. AMM TASK 52-51-11-960-802).
(5) Make a protection plate (4) as follows:
(a) Use the AMS 5518- .008 - metal sheet or the LN9456E (WL1.4324.6) - metal strip to make the protection plate (4).
(b) Remove the burrs from the edges of the protection plate (4).
(6) Repair the damaged area as follows:
(a) Remove the burrs from the aluminum profile (3).
(b) Fill the repaired area with Paste Adhesive-Epoxy Core Restoration - (Material No.13FBC6) .
(c) After the composite paste cures, polish the surface between the repaired area and the initial profile to make it smooth.
(d) Make sure that the surface is 2 mm (0.0787 in.) thick and D is 6 mm (0.2362 in.).
(e) Apply Surface Pretreatment-Light Alloys Chemical Conversion Yellow - (Material No.10ABC1) where necessary.
(7) Prepare the damaged area for a satisfactory bonding:
(a) Use the protection plate (4) as a template to get the contour of the adhesive area on the aluminum profile (3).
(b) Apply the TAPE - ADHESIVE to identify the limits of the bonded area.
(c) Rub the mating surfaces of the aluminum profile (3) with a grade 80 to 150 abrasive cloth to make sure that the surfaces are satisfactory for the bond.
(d) Clean the mating surfaces of the aluminum profile (3) with the Textile-Lint free Cotton - (Material No.14SBA1) and Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(8) Bond the protection plate (4) as follows:
(a) Apply Epoxy Adhesive-Metal to metal - Legacy (Material No.05EJL9) on the mating surface of the protection plate (4).
(b) Apply the TAPE - ADHESIVE to hold the protection plate (4) in position and let Epoxy Adhesive-Metal to metal - Legacy (Material No.05EJL9) cure.
(9) Clean the repaired area as follows:
(a) Remove the TAPE - ADHESIVE and clean the surface with the Textile-Lint free Cotton - (Material No.14SBA1) and Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(b) Do the adjustment procedure of cabin entrance-light dimming-switch 310LG (Ref. AMM TASK 33-21-12-400-001).
5. Close-up(1) Examine the aluminum profile (3) for damage.
(2) Measure the damage found.
NOTE: Repair limit/permitted damage:
(3) If depth T is less than or equal to 50% of the initial profile thickness of 1 mm (0.0394 in.), do one of the blending procedures that follow: - Y= width of the damage removed (Y >/= 40 x T)
- T= depth of the material removed.
(a) Hand-blending:
1 Use the CLOTH-EMERY, FINE, PAD - ABRASIVE or the PAPER - ABRASIVE, FINE, to abrade the area to a maximum of 10 mm (0.394 in.) around the damage.
2 Make sure that you removed all the damage.
3 Apply Surface Pretreatment-Light Alloys Chemical Conversion Yellow - (Material No.10ABC1) where necessary.
(b) Blending procedure with a rotary file:
1 If depth T is large, use the FILE - ROUND to remove as much material as necessary.
2 Make sure that the thickness of the edge channel is 2 mm (0.079 in.).
3 Abrade the area to a maximum of 10 mm (0.394 in.) around the damage.
4 Make sure that you removed all the damage.
5 Apply Surface Pretreatment-Light Alloys Chemical Conversion Yellow - (Material No.10ABC1) where necessary.
(4) If depth T is more than 50% of the initial profile thickness of 1 mm (0.0394 in.), repair the damaged area.
(a) If you find many types of damage, replace the aluminum profile (3) (Ref. AMM TASK 52-51-11-960-802).
(5) Make a protection plate (4) as follows:
(a) Use the AMS 5518- .008 - metal sheet or the LN9456E (WL1.4324.6) - metal strip to make the protection plate (4).
(b) Remove the burrs from the edges of the protection plate (4).
(6) Repair the damaged area as follows:
(a) Remove the burrs from the aluminum profile (3).
(b) Fill the repaired area with Paste Adhesive-Epoxy Core Restoration - (Material No.13FBC6) .
(c) After the composite paste cures, polish the surface between the repaired area and the initial profile to make it smooth.
(d) Make sure that the surface is 2 mm (0.0787 in.) thick and D is 6 mm (0.2362 in.).
(e) Apply Surface Pretreatment-Light Alloys Chemical Conversion Yellow - (Material No.10ABC1) where necessary.
(7) Prepare the damaged area for a satisfactory bonding:
(a) Use the protection plate (4) as a template to get the contour of the adhesive area on the aluminum profile (3).
(b) Apply the TAPE - ADHESIVE to identify the limits of the bonded area.
(c) Rub the mating surfaces of the aluminum profile (3) with a grade 80 to 150 abrasive cloth to make sure that the surfaces are satisfactory for the bond.
(d) Clean the mating surfaces of the aluminum profile (3) with the Textile-Lint free Cotton - (Material No.14SBA1) and Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(8) Bond the protection plate (4) as follows:
(a) Apply Epoxy Adhesive-Metal to metal - Legacy (Material No.05EJL9) on the mating surface of the protection plate (4).
(b) Apply the TAPE - ADHESIVE to hold the protection plate (4) in position and let Epoxy Adhesive-Metal to metal - Legacy (Material No.05EJL9) cure.
(9) Clean the repaired area as follows:
(a) Remove the TAPE - ADHESIVE and clean the surface with the Textile-Lint free Cotton - (Material No.14SBA1) and Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(b) Do the adjustment procedure of cabin entrance-light dimming-switch 310LG (Ref. AMM TASK 33-21-12-400-001).
Subtask 52-51-00-410-052-A
A. Put the aircraft back to its initial configuration.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the cockpit door.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the cockpit door.