DOC AIRBUS | AMM A320FSpecial Detailed Inspection (HFEC) of Upper Flange of Longitudinal Floor Beams at FR 42 and FR 46, as far as Visible
TASK 53-31-00-220-003-A
Special Detailed Inspection (HFEC) of Upper Flange of Longitudinal Floor Beams at FR 42 and FR 46, as far as Visible
Refer to the MPD TASK: 533110-09
SPECIAL DETAILED INSPECTION (HFEC) OF UPPER FLANGE OF LONGITUDINAL FLOOR BEAMS AT FR 42 AND FR 46, AS FAR AS VISIBLE
A. Consumable Materials
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 53-31-00-860-054-A
Subtask 53-31-00-220-055-A
Subtask 53-31-00-370-050-A
[Rev.10 from 2021]
2026.04.02 06:29:06 UTC
Special Detailed Inspection (HFEC) of Upper Flange of Longitudinal Floor Beams at FR 42 and FR 46, as far as Visible
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: 533110-09
SPECIAL DETAILED INSPECTION (HFEC) OF UPPER FLANGE OF LONGITUDINAL FLOOR BEAMS AT FR 42 AND FR 46, AS FAR AS VISIBLE
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 InformationA. Consumable Materials
| 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 |
|---|---|
| 145 | PRESS ZONE BETW WING CTR BOX MAIN GEAR |
| 146 | PRESS ZONE BETW WING CTR BOX MAIN GEAR |
| 241JF, 241KF, 241LF, 241MF, 242KF, 242LF, 242MF |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 24-42-00-861-001-A | Energize the Ground Service Network from the External Power |
| TASK 24-42-00-862-001-A | De-energize the Ground Service Network Supplied from the External Power |
| TASK 51-78-00-916-001-A | Application of Temporary Protection System (TPS) |
| TASK 53-00-00-000-801-A | Removal of the Floor Panels in the Cabin from FR12 to FR70 |
| TASK 53-00-00-000-801-A-01 | Removal of the Floor Panels in the Cabin from FR12 to FR70 (Alternative Removal Procedure - Dry Sealing Concept) |
| TASK 53-00-00-000-801-A-02 | Removal of the Cabin Floor Panels from FR12 to FR70 (Alternative Removal Procedure with the Skyflex Option) |
| TASK 53-00-00-400-801-A | Installation of the Floor Panels in the Cabin from FR12 to FR70 |
| TASK 53-00-00-400-801-A-01 | Installation of the Floor Panels in the Cabin from FR12 to FR70 (Alternative Installation Procedure - Dry Sealing Concept) |
| TASK 53-00-00-400-801-A-02 | Installation of the Cabin Floor Panels from FR12 to FR70 (Alternative Installation Procedure with the Skyflex Option) |
| SRM 511100 | |
| SRM 512200 | |
| SRM 512300 | |
| SRM 512400 | |
| NTM 533110 | |
Inspection Area of the Upper Flanges of Floor Beams at FR 42 and FR 46Subtask 53-31-00-860-054-A
A. Aircraft Maintenance Configuration
(1) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).
Subtask 53-31-00-010-080-A (1) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).
B. Get Access
(1) Remove the necessary equipment and furnishing to get access to the cabin floor panels.
(2) Remove the floor panels: (Ref. AMM TASK 53-00-00-000-801)
(a) For the left side: 241MF, 241LF, 241KF and 241JF
(b) For the right side: 242KF, 242LF and 242MF.
(3) Disconnect the electrical wire bundles from the floor beams at FR 42 and FR 43, as necessary, to get access to the inspection area.
Subtask 53-31-00-110-133-A (1) Remove the necessary equipment and furnishing to get access to the cabin floor panels.
(2) Remove the floor panels: (Ref. AMM TASK 53-00-00-000-801)
(a) For the left side: 241MF, 241LF, 241KF and 241JF
(b) For the right side: 242KF, 242LF and 242MF.
(3) Disconnect the electrical wire bundles from the floor beams at FR 42 and FR 43, as necessary, to get access to the inspection area.
C. 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 a Textile-Lint free Cotton - (Material No.14SBA1) .
(3) If there is a TPS layer and if it does not let you do a satisfacatory 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 a Textile-Lint free Cotton - (Material No.14SBA1) .
(3) If there is a TPS layer and if it does not let you do a satisfacatory 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 53-31-00-220-055-A
A. Inspection
(1) Do a special detailed inspection (HFEC) of the upper flange of longitudinal floor beams at FR 42 and FR 46, as far as visible for damage or discontinuities. Refer to NTM 533110.
(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.
(b) Other damage (scratches, cracks, gouges, dents, creases):
If you find this type of damage, refer to the Structural Repair Manual ( SRM 511100) for damage types, classification and corrective action.
Subtask 53-31-00-916-081-A (1) Do a special detailed inspection (HFEC) of the upper flange of longitudinal floor beams at FR 42 and FR 46, as far as visible for damage or discontinuities. Refer to NTM 533110.
(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.
(b) Other damage (scratches, cracks, gouges, dents, creases):
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
(1) If the TPS was removed 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 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 Soft Film - (Material No.12ABC1)
(Ref. AMM TASK 51-78-00-916-001).
5. Close-up(1) If the TPS was removed 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 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 Soft Film - (Material No.12ABC1)
(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 satisfactory corrosion protection.
Subtask 53-31-00-370-050-A
A. Sealant or paint application
(1) If the NTM procedure asked to remove the sealant and/or paint from the inspection area, apply sealant ( SRM 512400) or paint ( SRM 512300) on the inspection area.
Subtask 53-31-00-410-078-A (1) If the NTM procedure asked to remove the sealant and/or paint from the inspection area, apply sealant ( SRM 512400) or paint ( SRM 512300) on the inspection area.
B. Close Access
(1) Connect the electrical wire bundles to the floor beams at FR 42 and FR 43.
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Install the floor panels: (Ref. AMM TASK 53-00-00-400-801)
(a) For the left side: 241MF, 241LF, 241KF and 241JF
(b) For the right side: 242KF, 242LF and 242MF.
(4) Install the equipment and furnishing, removed to get access to the cabin floor panels.
Subtask 53-31-00-860-055-A (1) Connect the electrical wire bundles to the floor beams at FR 42 and FR 43.
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Install the floor panels: (Ref. AMM TASK 53-00-00-400-801)
(a) For the left side: 241MF, 241LF, 241KF and 241JF
(b) For the right side: 242KF, 242LF and 242MF.
(4) Install the equipment and furnishing, removed to get access to the cabin floor panels.
C. Aircraft Maintenance Configuration
(1) De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).
(1) De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).