DOC AIRBUS | AMM A320FSpecial Detailed Inspection (HFEC) of Floor Beam Elliptical Holes in Current Area, Y+/-254, Y+/-765 between Stiffener 12 and Stiffener 15
TASK 57-10-00-250-802-A
Special Detailed Inspection (HFEC) of Floor Beam Elliptical Holes in Current Area, Y+/-254, Y+/-765 between Stiffener 12 and Stiffener 15
Refer to the MPD TASK: 571191-01
SPECIAL DETAILED INSPECTION (HFEC) OF FLOOR BEAM ELLIPTICAL HOLES IN CURRENT AREA, Y+/-254, Y+/-765 BETWEEN STIFFENER 12 AND STIFFENER 15.
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 57-10-00-010-097-A
Subtask 57-10-00-250-060-A
Subtask 57-10-00-410-098-A
[Rev.10 from 2021]
2026.04.02 06:30:31 UTC
Special Detailed Inspection (HFEC) of Floor Beam Elliptical Holes in Current Area, Y+/-254, Y+/-765 between Stiffener 12 and Stiffener 15
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
ZONE: 140
1. Reason for the JobRefer to the MPD TASK: 571191-01
SPECIAL DETAILED INSPECTION (HFEC) OF FLOOR BEAM ELLIPTICAL HOLES IN CURRENT AREA, Y+/-254, Y+/-765 BETWEEN STIFFENER 12 AND STIFFENER 15.
NOTE: The effectivity of this task is "ALL". To know if this task is applicable to your aircraft, refer to the MPD task applicability.
The information on weight variant groups is given in the MPD and SRM introductions.
2. Job Set-up InformationThe information on weight variant groups is given in the MPD and SRM introductions.
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | FLASHLIGHT |
| No specific | AR | MIRROR - INSPECTION |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.08BAA9) | Non Aqueous Cleaner-General - - |
| (Material No.12ADB1) | Corrosion Preventive Compound-Water Displacing & Heavy Duty Hard Film - |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 140 | CENTER WING |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 25-80-00-000-001-A | Removal of the Insulation Blankets |
| TASK 25-80-00-400-001-A | Installation of the Insulation Blankets |
| TASK 51-78-00-916-001-A | Application of Temporary Protection System (TPS) |
| TASK 53-32-12-000-002-A | Removal of the Cabin Floor Panels |
| TASK 53-32-12-400-002-A | Installation of the Cabin Floor Panels |
| NTM 571191 | |
| SRM 511100 | (for corrective action) |
| SRM 512200 | (for corrective action) |
| TASK 25-42-00-00 | MID LAVATORIES - DESCRIPTION AND OPERATION |
Floor-Beam Elliptical Holes in the Inspection Area at Y+/-254 and Y+/-765, between Stiffener 12 and Stiffener 15Subtask 57-10-00-010-097-A
A. Get Access
(1) Remove the galleys and lavatories between FR36 and FR42, if necessary.
To do this, refer to the para. Component Location in the applicable ATA 25 Description/Operation: for the galleys (Ref. AMM D/O 25-32-00-00), for the lavatories (Ref. AMM D/O 25-42-00-00). In this paragraph, you will find the cross-references of the removal/installation tasks.
(2) Remove the necessary cabin floor panels between FR36 and FR42 to get access to the inspection area (Ref. AMM TASK 53-32-12-000-002).
(3) Remove the necessary insulation blankets between FR36 and FR42 to get access to the inspection area (Ref. AMM TASK 25-80-00-000-001).
Subtask 57-10-00-110-085-A (1) Remove the galleys and lavatories between FR36 and FR42, if necessary.
To do this, refer to the para. Component Location in the applicable ATA 25 Description/Operation: for the galleys (Ref. AMM D/O 25-32-00-00), for the lavatories (Ref. AMM D/O 25-42-00-00). In this paragraph, you will find the cross-references of the removal/installation tasks.
(2) Remove the necessary cabin floor panels between FR36 and FR42 to get access to the inspection area (Ref. AMM TASK 53-32-12-000-002).
(3) Remove the necessary insulation blankets between FR36 and FR42 to get access to the inspection area (Ref. AMM TASK 25-80-00-000-001).
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) Use the FLASHLIGHT and the MIRROR - INSPECTION, if necessary.
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) Use the FLASHLIGHT and the MIRROR - INSPECTION, if necessary.
Subtask 57-10-00-250-060-A
A. Inspection
(1) Do a special detailed inspection (HFEC) of the floor-beam elliptical holes in the inspection area at Y+/-254 and Y+/-765 for damage or discontinuities. This inspection includes the area between stiffener 12 and stiffener 15. Refer to the Nondestructive Testing Manual ( NTM 571191).
(2) Make a report of the damage after the NTM inspection:
(a) Corrosion damage:
Subtask 57-10-00-916-056-A (1) Do a special detailed inspection (HFEC) of the floor-beam elliptical holes in the inspection area at Y+/-254 and Y+/-765 for damage or discontinuities. This inspection includes the area between stiffener 12 and stiffener 15. Refer to the Nondestructive Testing Manual ( NTM 571191).
(2) Make a report of the damage after the NTM inspection:
(a) Corrosion damage:
- If you find corrosion, refer to the Structural Repair Manual ( SRM 512200) for the corrosion types, inspection, removal and subsequent corrosion protection.
- If you find this type of damage, refer to the Structural Repair Manual ( SRM 511100) for damage types, classification and corrective action.
B. Check and Application of the TPS Layer
(2) If the TPS was not removed 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).
(3) If the TPS layer has local damage, remove the damaged TPS layer and apply a new layer of Corrosion Preventive Compound-Water Displacing & Heavy Duty Hard Film - (Material No.12ADB1) (Ref. AMM TASK 51-78-00-916-001).
5. Close-upCAUTION:
DO NOT APPLY TEMPORARY PROTECTION SYSTEM (TPS) TYPE 3 ON THE MOVABLE COMPONENTS. USE ONLY TPS TYPE 1 GRADE 2. IF YOU DO NOT OBEY THIS INSTRUCTION, THE MECHANISMS WILL NOT OPERATE CORRECTLY.
(1) If the TPS was removed at the "Preparation of the Inspection Area", apply a layer of Corrosion Preventive Compound-Water Displacing & Heavy Duty Hard Film - (Material No.12ADB1) (Ref. AMM TASK 51-78-00-916-001). (2) If the TPS was not removed 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).
(3) If the TPS layer has local damage, remove the damaged TPS layer and apply a new layer of Corrosion Preventive Compound-Water Displacing & Heavy Duty Hard Film - (Material No.12ADB1) (Ref. AMM TASK 51-78-00-916-001).
NOTE: If, after the check of the condition and integrity, the TPS layer is in the correct condition, Airbus recommends that you apply a new layer as a spray on the existing layer. This is to make sure that the TPS layer continues to give a satisfactory corrosion protection.
Subtask 57-10-00-410-098-A
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the insulation blankets between FR36 and FR42 (Ref. AMM TASK 25-80-00-400-001).
(3) Install the cabin floor panels between FR36 and FR42 (Ref. AMM TASK 53-32-12-400-002).
(4) Install the galleys and lavatories between FR36 and FR42, if removed.
To do this, refer to the para. Component Location in the applicable ATA 25 Description/Operation: for the galleys (Ref. AMM D/O 25-32-00-00), for the lavatories (Ref. AMM D/O 25-42-00-00). In this paragraph, you will find the cross-references of the removal/installation tasks.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the insulation blankets between FR36 and FR42 (Ref. AMM TASK 25-80-00-400-001).
(3) Install the cabin floor panels between FR36 and FR42 (Ref. AMM TASK 53-32-12-400-002).
(4) Install the galleys and lavatories between FR36 and FR42, if removed.
To do this, refer to the para. Component Location in the applicable ATA 25 Description/Operation: for the galleys (Ref. AMM D/O 25-32-00-00), for the lavatories (Ref. AMM D/O 25-42-00-00). In this paragraph, you will find the cross-references of the removal/installation tasks.