DOC AIRBUS | AMM A320FRepair of the Bonding Strip Attachment
TASK 28-00-00-300-001-A
Repair of the Bonding Strip Attachment
This procedure is only applicable for aluminum pipes. For the repair procedure of corrosion-resistant steel pipes, you must refer to AMM TASK 20-28-00-912-805-A.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Referenced Information
3. Job Set-up
Subtask 28-00-00-941-054-A
Subtask 28-00-00-350-050-A
Subtask 28-00-00-942-051-A
[Rev.10 from 2021]
2026.04.02 06:16:56 UTC
Repair of the Bonding Strip Attachment
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.
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobThis procedure is only applicable for aluminum pipes. For the repair procedure of corrosion-resistant steel pipes, you must refer to AMM TASK 20-28-00-912-805-A.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | PAPER - ABRASIVE (GRADE 320) |
| No specific | AR | SAFETY BARRIER(S) |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.04DAB2) | Primer Epoxy Paint-- Corrosion Inhibiting Structure |
| (Material No.06ABA1) | Polysulfide Sealant-Fuel Tank Brushable - |
| (Material No.08BAA9) | Non Aqueous Cleaner-General - - |
| (Material No.13XGC1) | Laminate Repair Patch-Flexible membrane Fuel resistant - |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 20-28-00-720-006-A | Check of the Electrical Bonding of the Fluid Systems |
| TASK 20-28-00-912-802-A | Electrical Bonding - General Maintenance Procedure |
| TASK 28-00-00-910-001-A | Fuel Safety Procedures |
Bonding Clip-Repair DetailSubtask 28-00-00-941-054-A
A. Safety Precautions
(2) Put the SAFETY BARRIER(S) in position.
4. ProcedureWARNING:
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) Put the SAFETY BARRIER(S) in position.
Subtask 28-00-00-350-050-A
A. Repair of the Bonding Strip Attachment
(2) Measure the outside diameter of the fuel pipe at the point of the new bonding clip.
(3) Make a new bonding clip from 6061 aluminium alloy 0.56 mm (0.0220 in.) to 0.71 mm (0.0280 in.) thick.
(4) Carefully make the remaining part of the damaged bonding lug smooth. Be careful not to remove or damage the original weld.
(5) Clean the repaired surface with Non Aqueous Cleaner-General - - (Material No.08BAA9) , dry the surface with a clean Textile-Lint free Cotton - (Material No.14SBA1) .
(6) Brush the repaired area with Primer Epoxy Paint-- Corrosion Inhibiting Structure (Material No.04DAB2) and let the paint dry.
(7) Remove the protective treatment from around the fuel pipe adjacent to the repair, use PAPER - ABRASIVE (GRADE 320). Do this where you can attach the new bonding clip.
(8) Use Laminate Repair Patch-Flexible membrane Fuel resistant - (Material No.13XGC1) to make the surface smooth where you removed the protective treatment.
(9) Clean the bonding clip with Non Aqueous Cleaner-General - - (Material No.08BAA9) and dry it with a clean lint-free cloth.
(10) Put the bonding clip in position, and install the bonding strip with the bolt and the nut (Ref. AMM TASK 20-28-00-912-802). Make sure that the new bonding clip is tight.
(11) Do a bonding check (Ref. AMM TASK 20-28-00-720-006).
(12) Apply a thin layer of Polysulfide Sealant-Fuel Tank Brushable - (Material No.06ABA1) to:
5. Close-upWARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
(1) Remove the nut and the bolt, with the broken lug from the bonding strap. Discard the broken lug, do not discard the nut and the bolt. (2) Measure the outside diameter of the fuel pipe at the point of the new bonding clip.
(3) Make a new bonding clip from 6061 aluminium alloy 0.56 mm (0.0220 in.) to 0.71 mm (0.0280 in.) thick.
(4) Carefully make the remaining part of the damaged bonding lug smooth. Be careful not to remove or damage the original weld.
(5) Clean the repaired surface with Non Aqueous Cleaner-General - - (Material No.08BAA9) , dry the surface with a clean Textile-Lint free Cotton - (Material No.14SBA1) .
(6) Brush the repaired area with Primer Epoxy Paint-- Corrosion Inhibiting Structure (Material No.04DAB2) and let the paint dry.
(7) Remove the protective treatment from around the fuel pipe adjacent to the repair, use PAPER - ABRASIVE (GRADE 320). Do this where you can attach the new bonding clip.
(8) Use Laminate Repair Patch-Flexible membrane Fuel resistant - (Material No.13XGC1) to make the surface smooth where you removed the protective treatment.
(9) Clean the bonding clip with Non Aqueous Cleaner-General - - (Material No.08BAA9) and dry it with a clean lint-free cloth.
(10) Put the bonding clip in position, and install the bonding strip with the bolt and the nut (Ref. AMM TASK 20-28-00-912-802). Make sure that the new bonding clip is tight.
(11) Do a bonding check (Ref. AMM TASK 20-28-00-720-006).
(12) Apply a thin layer of Polysulfide Sealant-Fuel Tank Brushable - (Material No.06ABA1) to:
- the bonding clip (make an overlap of the sealant onto the fuel pipe of 5.0mm (0.1968in))
- the bonding lug
- the nut and the bolt of the bonding strip
- the area of the fuel pipe where you removed the protective treatment.
Subtask 28-00-00-942-051-A
A. Removal of Equipment
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the safety barriers.
(3) Remove the WARNING NOTICE(S).
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the safety barriers.
(3) Remove the WARNING NOTICE(S).
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.