DOC AIRBUS | AMM A320FBonding Surface Preparation
TASK 20-28-00-912-803-A
Bonding Surface Preparation
This procedure gives a clear surface without grease, corrosion, old sealant or varnish, sharp edges, scratches or other damage.
This is to give the best electrical continuity of the equipment or the part assembly.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Referenced Information
3. Job Set-up
Subtask 20-28-00-941-065-A
Subtask 20-28-00-912-072-A
[Rev.10 from 2021]
2026.04.01 04:50:34 UTC
Bonding Surface Preparation
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobThis procedure gives a clear surface without grease, corrosion, old sealant or varnish, sharp edges, scratches or other damage.
This is to give the best electrical continuity of the equipment or the part assembly.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | BRUSH - WIRE |
| No specific | 1 | SCOTCHBRITE |
| No specific | 1 | SCRAPER - PLASTIC |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.08BAA9) | Non Aqueous Cleaner-General - - |
| (Material No.14FAE1) | Abrasive-- Emery cloth - |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| REFERENCE | DESIGNATION |
|---|---|
Bonding Contact Surface Preparation - Stripping Method by Metallic BrushSubtask 20-28-00-941-065-A
A. There is no special job set-up for this task.
4. ProcedureSubtask 20-28-00-912-072-A
A. Preparation of the Bonding Contact Surface
(1) Preparation for bonding of a metal contact surface:
(a) Make sure that the bare area has no non-conductive protection or corrosion.
1 Remove all signs of old protection material (sealant and/or varnish) from the bonding surfaces with a SCRAPER - PLASTIC and SCOTCHBRITE.
2 Remove all signs of corrosion from the bonding surfaces with SCOTCHBRITE.
3 Remove all signs of top coat or primary paint with Abrasive-- Emery cloth - (Material No.14FAE1) grade 320 and/or BRUSH - WIRE.
(b) Make sure that the dimensions of the bare surface are 2 mm (0.08 in.) to 4 mm (0.16 in.) larger than the dimensions of the bonding contact surfaces.
(c) Clean the bonding area with Non Aqueous Cleaner-General - - (Material No.08BAA9) and a Textile-Lint free Cotton - (Material No.14SBA1) to remove all signs of grease, oil or dust.
(2) Preparation for bonding of a composite contact surface:
(c) Do not cause damage to the composite surface.
(1) Preparation for bonding of a metal contact surface:
(a) Make sure that the bare area has no non-conductive protection or corrosion.
1 Remove all signs of old protection material (sealant and/or varnish) from the bonding surfaces with a SCRAPER - PLASTIC and SCOTCHBRITE.
2 Remove all signs of corrosion from the bonding surfaces with SCOTCHBRITE.
3 Remove all signs of top coat or primary paint with Abrasive-- Emery cloth - (Material No.14FAE1) grade 320 and/or BRUSH - WIRE.
(b) Make sure that the dimensions of the bare surface are 2 mm (0.08 in.) to 4 mm (0.16 in.) larger than the dimensions of the bonding contact surfaces.
(c) Clean the bonding area with Non Aqueous Cleaner-General - - (Material No.08BAA9) and a Textile-Lint free Cotton - (Material No.14SBA1) to remove all signs of grease, oil or dust.
(2) Preparation for bonding of a composite contact surface:
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
(a) Clean the bonding area with Non Aqueous Cleaner-General - - (Material No.08BAA9) and a Textile-Lint free Cotton - (Material No.14SBA1) to remove all signs of grease, oil or signs of dust particles from the protected surface. CAUTION:
DO NOT CAUSE DAMAGE TO THE SURFACE OF THE COMPOSITE MATERIAL WHEN YOU REMOVE THE PAINT COATING WITH ABRASIVE PAPER.
(b) Remove all signs of old protection (sealant and/or varnish) from the fasteners and the composite panels with a SCRAPER - PLASTIC. (c) Do not cause damage to the composite surface.
CAUTION:
DO NOT CAUSE DAMAGE TO THE SURFACE OF THE COMPOSITE MATERIAL WHEN YOU REMOVE THE PAINT COATING WITH ABRASIVE PAPER.
(d) For composite part with Expanded Copper Foil (ECF) or bronze mesh, remove the paint (if necessary) from the bonding point area on the composite with a thin grade sanding disk: - Use Abrasive-- Emery cloth - (Material No.14FAE1) grade 240 or 320 and then grade 400.