DOC AIRBUS | AMM A320FDetailed Inspection of Hinge and Actuator Fittings for MLG Doors at Keelbeam
TASK 53-31-00-210-014-A
Detailed Inspection of Hinge and Actuator Fittings for MLG Doors at Keelbeam
Refer to the MPD TASK: 533154-01
DETAILED INSPECTION OF HINGE AND ACTUATOR FITTINGS FOR MLG DOORS AT KEELBEAM
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 53-31-00-010-067-A
Subtask 53-31-00-210-063-A
Subtask 53-31-00-410-063-A
[Rev.10 from 2021]
2026.04.02 06:29:05 UTC
Detailed Inspection of Hinge and Actuator Fittings for MLG Doors at Keelbeam
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: 533154-01
DETAILED INSPECTION OF HINGE AND ACTUATOR FITTINGS FOR MLG DOORS AT KEELBEAM
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 2M (6 FT) |
| No specific | 1 | WARNING NOTICE(S) |
| 460005835 | 2 | SLEEVE - GROUND LOCK |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.05RDA1) | Adhesive Film Tape-Masking - - |
| (Material No.08BAA9) | Non Aqueous Cleaner-General - - |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 147 | MAIN GEAR WELL AND HYDRAULIC COMPARTMENT |
| 148 | MAIN GEAR WELL AND HYDRAULIC COMPARTMENT |
| 734 | MAIN DOOR |
| 744 | MAIN DOOR |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 29-10-00-864-001-A | Depressurize the Green Hydraulic System |
| TASK 29-10-00-864-002-A | Depressurize the Yellow Hydraulic System |
| TASK 29-10-00-864-003-A | Depressurize the Blue Hydraulic System |
| TASK 32-00-00-081-002-A | Removal of the Safety Devices from the Landing Gear Doors |
| TASK 32-00-00-481-002-A | Installation of the Safety Devices on the Landing Gear Doors |
| TASK 32-12-00-010-001-A | Open the Main Gear Doors for Access |
| TASK 32-12-00-410-001-A | Close the Main Gear Doors after Access |
| TASK 32-12-11-400-001-A | Installation of the Door Assembly - Main |
| TASK 32-31-35-400-001-A | Installation of the MLG Door Actuating-Cylinder |
| TASK 51-78-00-916-001-A | Application of Temporary Protection System (TPS) |
| SRM 511100 | |
| SRM 512200 | |
 Inspection areas of the Hinge Fittings and the Actuator Fitting of the MLG Door ** ON A/C NOT FOR ALL | |
| Inspection areas of the Hinge Fittings and the Actuator Fitting of the MLG Door ** ON A/C NOT FOR ALL | |
| Inspection areas of the Hinge Fittings and the Actuator Fitting of the MLG Door ** ON A/C NOT FOR ALL | |
Subtask 53-31-00-010-067-A
A. Get Access
(1) Make sure that the MLG doors are open (Ref. AMM TASK 32-12-00-010-001).
(2) For each MLG door, install the 460005835 SLEEVE - GROUND LOCK on the MLG door actuator-cylinder (Ref. AMM TASK 32-00-00-481-002).
(3) Make sure that the Green, Blue and Yellow hydraulic systems are depressurized (Ref. AMM TASK 29-10-00-864-001), (Ref. AMM TASK 29-10-00-864-002) and (Ref. AMM TASK 29-10-00-864-003).
(4) Put the WARNING NOTICE(S) in position to tell persons not to operate the landing gears.
(5) Put the ACCESS PLATFORM 2M (6 FT) in position.
Subtask 53-31-00-110-117-A (1) Make sure that the MLG doors are open (Ref. AMM TASK 32-12-00-010-001).
(2) For each MLG door, install the 460005835 SLEEVE - GROUND LOCK on the MLG door actuator-cylinder (Ref. AMM TASK 32-00-00-481-002).
(3) Make sure that the Green, Blue and Yellow hydraulic systems are depressurized (Ref. AMM TASK 29-10-00-864-001), (Ref. AMM TASK 29-10-00-864-002) and (Ref. AMM TASK 29-10-00-864-003).
(4) Put the WARNING NOTICE(S) in position to tell persons not to operate the landing gears.
(5) Put the ACCESS PLATFORM 2M (6 FT) in position.
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 a Textile-Lint free Cotton - (Material No.14SBA1) .
(3) Remove the TPS layer, if it does not let you do a satisfactory inspection (Ref. AMM TASK 51-78-00-916-001).
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) Remove the TPS layer, if it does not let you do a satisfactory inspection (Ref. AMM TASK 51-78-00-916-001).
Subtask 53-31-00-210-063-A
A. Inspection
(1) Do a detailed inspection of the forward and aft keel-beam hinge-fittings of the left and right MLG doors. For each forward and aft keel-beam hinge-fitting, do a check for damage or discontinuities of:
(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 the damage types, classification and corrective action.
(3) Make sure that for each MLG door (Ref. AMM TASK 32-12-11-400-001):
(a) The forward and aft keel-beam hinge-fittings are correctly installed and adjusted.
(b) The spacer and a maximum of two shim washers are installed.
(4) Do a detailed inspection of the keel-beam actuator fittings of the left and right MLG doors. For each keel-beam actuator fitting, do a check for damage or discontinuities of:
(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 the damage types, classification and corrective action.
(6) Make sure that for each MLG door, the MLG door actuator and the spacer are correctly installed and adjusted (Ref. AMM TASK 32-31-35-400-001).
Subtask 53-31-00-916-061-A (1) Do a detailed inspection of the forward and aft keel-beam hinge-fittings of the left and right MLG doors. For each forward and aft keel-beam hinge-fitting, do a check for damage or discontinuities of:
- The hinge fitting
- The bearing
- The spacers
- Around the head of the bolt.
(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 the damage types, classification and corrective action.
(3) Make sure that for each MLG door (Ref. AMM TASK 32-12-11-400-001):
(a) The forward and aft keel-beam hinge-fittings are correctly installed and adjusted.
(b) The spacer and a maximum of two shim washers are installed.
(4) Do a detailed inspection of the keel-beam actuator fittings of the left and right MLG doors. For each keel-beam actuator fitting, do a check for damage or discontinuities of:
- The actuator fitting
- The bearing.
(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 the damage types, classification and corrective action.
(6) Make sure that for each MLG door, the MLG door actuator and the spacer are correctly installed and adjusted (Ref. AMM TASK 32-31-35-400-001).
B. Application of Temporary Protection System
(2) If there is a TPS layer, do a check of the condition and integrity of the TPS layer (Ref. AMM TASK 51-78-00-916-001).
(4) If you used solvents, high-pressure water, steam and/or cleaning agents to clean the TPS layer:
(a) Apply a full new layer of TPS on the inspection area, as recommended in the MPD (Ref. AMM TASK 51-78-00-916-001).
(b) If there is no TPS layer, apply a new layer of TPS on the inspection area, as recommended in the MPD (Ref. AMM TASK 51-78-00-916-001).
(5) Remove the masking paper or the masking tape.
5. Close-upWARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
CAUTION:
DO NOT APPLY TEMPORARY PROTECTION ON THE OXYGEN SYSTEMS.
MAKE SURE THAT THE TEMPORARY PROTECTION DOES NOT GET:
(1) Apply masking paper or masking tape Adhesive Film Tape-Masking - - (Material No.05RDA1) on the equipment and fittings adjacent to the area. - ON COMPOSITE PARTS, CONTROL CABLES, PULLEYS,TEFLON BEARINGS.
- ON LUBRICATED SURFACES.
- IN DRAIN VALVES OR OTHER ORIFICES.
(2) If there is a TPS layer, do a check of the condition and integrity of the TPS layer (Ref. AMM TASK 51-78-00-916-001).
NOTE: Airbus recommends that you always apply a new layer of TPS. This is to make sure that the TPS layer continues to give satisfactory corrosion protection. Make sure that the TPS layer is in the correct condition after the check. If the TPS is in the correct condition, apply a new layer as a spray on the remaining layer.
(3) Replace the damaged TPS layer with a new layer of TPS on the inspection area, as recommended in the MPD (Ref. AMM TASK 51-78-00-916-001). (4) If you used solvents, high-pressure water, steam and/or cleaning agents to clean the TPS layer:
(a) Apply a full new layer of TPS on the inspection area, as recommended in the MPD (Ref. AMM TASK 51-78-00-916-001).
(b) If there is no TPS layer, apply a new layer of TPS on the inspection area, as recommended in the MPD (Ref. AMM TASK 51-78-00-916-001).
(5) Remove the masking paper or the masking tape.
Subtask 53-31-00-410-063-A
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) For each MLG door, remove the 460005835 SLEEVE - GROUND LOCK from the MLG door actuator-cylinder (Ref. AMM TASK 32-00-00-081-002).
(3) Close the MLG doors (Ref. AMM TASK 32-12-00-410-001).
(4) Remove the access platform(s).
(5) Remove the WARNING NOTICE(S).
(1) Make sure that the work area is clean and clear of tools and other items.
(2) For each MLG door, remove the 460005835 SLEEVE - GROUND LOCK from the MLG door actuator-cylinder (Ref. AMM TASK 32-00-00-081-002).
(3) Close the MLG doors (Ref. AMM TASK 32-12-00-410-001).
(4) Remove the access platform(s).
(5) Remove the WARNING NOTICE(S).