DOC AIRBUS | AMM A320FSpecial Detailed Inspection of Upper Skin of Longitudinal Lap Joints, Including Crack Stopper Areas at Stringer 32 LH/RH and Stringer 41 RH, External Surface
TASK 53-41-00-280-803-A
Special Detailed Inspection of Upper Skin of Longitudinal Lap Joints, Including Crack Stopper Areas at Stringer 32 LH/RH and Stringer 41 RH, External Surface
Refer to the MPD TASK: 534104-01
SPECIAL DETAILED INSPECTION (LFEC) OF UPPER SKIN OF LONGITUDINAL LAP JOINTS, INCLUDING CRACK STOPPER AREAS AT STRINGER 32 LH, BETWEEN FR 47 AND FR 53 (A320) / FR 48 (A321), FR 47/51 AND FR 57 (A319), FR 47/54 AND FR 59 (A318) AND AT STR 32 RH, BETW. FR 47 AND FR 47.5 (A321), AND AT STR. 41 RH, BETW. FR 47 AND FR 51 (A320) / FR 47.4 (A321), FR 47/51 AND FR 55 (A319), FR47/54 AND FR 57 (A318), EXTERNAL SURFACE.
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 53-41-00-010-237-A
Subtask 53-41-00-280-052-A
Subtask 53-41-00-410-229-A
[Rev.10 from 2021]
2026.04.02 06:29:14 UTC
Special Detailed Inspection of Upper Skin of Longitudinal Lap Joints, Including Crack Stopper Areas at Stringer 32 LH/RH and Stringer 41 RH, External Surface
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobRefer to the MPD TASK: 534104-01
SPECIAL DETAILED INSPECTION (LFEC) OF UPPER SKIN OF LONGITUDINAL LAP JOINTS, INCLUDING CRACK STOPPER AREAS AT STRINGER 32 LH, BETWEEN FR 47 AND FR 53 (A320) / FR 48 (A321), FR 47/51 AND FR 57 (A319), FR 47/54 AND FR 59 (A318) AND AT STR 32 RH, BETW. FR 47 AND FR 47.5 (A321), AND AT STR. 41 RH, BETW. FR 47 AND FR 51 (A320) / FR 47.4 (A321), FR 47/51 AND FR 55 (A319), FR47/54 AND FR 57 (A318), EXTERNAL SURFACE.
NOTE: The effectivity of this task is "ALL". To know if this task is applicable to your aircraft, refer to the ALI task applicability.
2. Job Set-up InformationA. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.08BAA9) | Non Aqueous Cleaner-General - - |
| (Material No.12ABC1) | Corrosion Preventive Compound_Water Displacing Soft Film - |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 150 | AFT CARGO COMPARTMENT FWD PRESS BULKHEAD TO AFT BULKHEAD OF AFT CARGO COMPARTMENT |
| 197 | REAR FAIRING |
| 198 | REAR FAIRING |
| 197AB, 197BB, 197GB, 197KB, 197LB, 197RB, 197SB, 197TB, 198BB, 198GB, 198KB, 198LB, 198MB, 198SB, 198UB |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 51-78-00-916-001-A | Application of Temporary Protection System (TPS) |
| TASK 53-35-13-000-001-A | Removal of the Belly Fairing Access Panels |
| TASK 53-35-13-000-002-A | Removal of the Quick-Release Access Panels from the Belly Fairing Structure |
| TASK 53-35-13-400-001-A | Installation of the Belly Fairing Access Panels |
| TASK 53-35-13-400-002-A | Installation of the Quick-Release Access Panels on the Belly Fairing Structure |
| SRM 511100 | |
| SRM 512200 | |
| SRM 512300 | |
| SRM 512400 | |
| NTM 534104 | |
External Surface of the Longitudinal Lap-Joints Upper-Skin (Crack Stopper Areas Included)Subtask 53-41-00-010-237-A
A. Get Access
(1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position below the applicable area:
(a) For the left side:
(b) For the right side:
Subtask 53-41-00-110-189-A (1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position below the applicable area:
- For the left side, at zone 197
- For the right side, at zone 198.
(a) For the left side:
(b) For the right side:
B. Preparation of the Inspection Area
(1) Make sure that the inspection area is sufficiently clean to do a satisfactory inspection of the area.
(2) If not, clean the inspection area with Non Aqueous Cleaner-General - - (Material No.08BAA9) and the Textile-Lint free Cotton - (Material No.14SBA1) .
(3) If there is a TPS layer and if it does not let you do a satisfactory inspection, remove the TPS layer (Ref. AMM TASK 51-78-00-916-001).
(4) Remove the sealant and/or paint from the inspection area if this is necessary for the Non-destructive Testing Manual (NTM) task.
4. Procedure(1) Make sure that the inspection area is sufficiently clean to do a satisfactory inspection of the area.
(2) If not, clean the inspection area with Non Aqueous Cleaner-General - - (Material No.08BAA9) and the Textile-Lint free Cotton - (Material No.14SBA1) .
(3) If there is a TPS layer and if it does not let you do a satisfactory inspection, remove the TPS layer (Ref. AMM TASK 51-78-00-916-001).
(4) Remove the sealant and/or paint from the inspection area if this is necessary for the Non-destructive Testing Manual (NTM) task.
Subtask 53-41-00-280-052-A
A. Inspection
(1) Do a special detailed inspection of the external surface of the longitudinal lap-joints upper-skin (crack stopper areas included) for damage and discontinuities NTM 534104:
(a) On the left side:
(a) Corrosion:
If you find corrosion, refer to the Structural Repair Manual SRM 512200 for the corrosion types, inspection, removal and subsequent corrosion protection.
(b) Other damage (scratches, cracks, gouges, dents, creases):
If you find this type of damage, refer to the Structural Repair Manual SRM 511100 for the damage types, classification and corrective action.
Subtask 53-41-00-910-056-A (1) Do a special detailed inspection of the external surface of the longitudinal lap-joints upper-skin (crack stopper areas included) for damage and discontinuities NTM 534104:
(a) On the left side:
- For A318, do this inspection at stringer 32 between FR47/54 and FR59.
- For A319, do this inspection at stringer 32 between FR47/51 and FR57.
- For A320, do this inspection at stringer 32 between FR47 and FR53.
- For A321, do this inspection at stringer 32 between FR47 and FR48.
- For A318, do this inspection at stringer 41 between FR47/54 and FR57.
- For A319, do this inspection at stringer 41 between FR47/51 and FR55.
- For A320, do this inspection at stringer 41 between FR47 and FR51.
- For A321, do this inspection at stringer 32 between FR47 and FR47.5.
- For A321, do this inspection at stringer 41 between FR47 and FR47.4.
(a) Corrosion:
If you find corrosion, refer to the Structural Repair Manual SRM 512200 for the corrosion types, inspection, removal and subsequent corrosion protection.
(b) Other damage (scratches, cracks, gouges, dents, creases):
If you find this type of damage, refer to the Structural Repair Manual SRM 511100 for the damage types, classification and corrective action.
B. Sealant or Paint Application
(1) If the NTM procedure told you to remove the sealant and/or paint from the inspection area, apply sealant SRM 512400 or paint SRM 512300 on the inspection area.
Subtask 53-41-00-916-127-A (1) If the NTM procedure told you to remove the sealant and/or paint from the inspection area, apply sealant SRM 512400 or paint SRM 512300 on the inspection area.
C. Check and Application of the TPS Layer
(1) If you removed the TPS at the ”Preparation of the Inspection Area”, apply a new layer of Corrosion Preventive Compound_Water Displacing Soft Film - (Material No.12ABC1) (Ref. AMM TASK 51-78-00-916-001).
(2) If you did not remove the TPS at the ”Preparation of the Inspection Area”, do a check of the condition and integrity of the TPS layer (Ref. AMM TASK 51-78-00-916-001) and make the decision to apply a new TPS layer or not.
(3) If the TPS layer has local damage, remove the damaged TPS layer and apply a new layer of Corrosion Preventive Compound_Water Displacing Soft Film - (Material No.12ABC1) (Ref. AMM TASK 51-78-00-916-001).
5. Close-up(1) If you removed the TPS at the ”Preparation of the Inspection Area”, apply a new layer of Corrosion Preventive Compound_Water Displacing Soft Film - (Material No.12ABC1) (Ref. AMM TASK 51-78-00-916-001).
(2) If you did not remove the TPS at the ”Preparation of the Inspection Area”, do a check of the condition and integrity of the TPS layer (Ref. AMM TASK 51-78-00-916-001) and make the decision to apply a new TPS layer or not.
(3) If the TPS layer has local damage, remove the damaged TPS layer and apply a new layer of Corrosion Preventive Compound_Water Displacing Soft Film - (Material No.12ABC1) (Ref. AMM TASK 51-78-00-916-001).
Subtask 53-41-00-410-229-A
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the applicable access panels (Ref. AMM TASK 53-35-13-400-001) and (Ref. AMM TASK 53-35-13-400-002):
(a) For the left side:
(b) For the right side:
(3) Remove the access platform(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) Install the applicable access panels (Ref. AMM TASK 53-35-13-400-001) and (Ref. AMM TASK 53-35-13-400-002):
(a) For the left side:
(b) For the right side:
(3) Remove the access platform(s).
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.