DOC AIRBUS | AMM A320FDetailed Inspection of Locking Hooks and Fork Fittings of Forward Cargo Compartment Door at all Frames, between Longeron 4 and Longeron 5 (6 Places)
TASK 52-31-11-200-005-A
Detailed Inspection of Locking Hooks and Fork Fittings of Forward Cargo Compartment Door at all Frames, between Longeron 4 and Longeron 5 (6 Places)
Refer to the MPD TASK: 523109-01
DETAILED INSPECTION OF LOCKING HOOKS AND FORK FITTINGS OF FORWARD CARGO COMPARTMENT DOOR AT ALL FRAMES, BETWEEN LONGERON 4 AND LONGERON 5 (6 PLACES)
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 52-31-11-010-066-B
Subtask 52-31-11-615-051-A
Subtask 52-31-11-865-068-A
[Rev.10 from 2021]
2026.04.01 01:41:02 UTC
Detailed Inspection of Locking Hooks and Fork Fittings of Forward Cargo Compartment Door at all Frames, between Longeron 4 and Longeron 5 (6 Places)
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
CAUTION:
IMMEDIATELY AFTER YOU OPEN THE CARGO COMPARTMENT DOOR, RECORD ON THE WORK CARD ON THE DOOR, THE DATE AND TIME WHEN YOU OPENED IT. IF THE CARGO COMPARTMENT DOOR STAYS OPEN FOR 12 HOURS OR MORE, YOU MUST BLEED THE HYDRAULIC SYSTEM RELATED TO IT. IF YOU DO NOT OBEY THESE PRECAUTIONS, THE DOOR CAN CLOSE SUDDENLY WHEN YOU SET THE DOOR TO "CLOSE". THIS CAN CAUSE DAMAGE TO THE DOOR AND TO THE AIRCRAFT STRUCTURE.
ZONE: 825
1. Reason for the JobRefer to the MPD TASK: 523109-01
DETAILED INSPECTION OF LOCKING HOOKS AND FORK FITTINGS OF FORWARD CARGO COMPARTMENT DOOR AT ALL FRAMES, BETWEEN LONGERON 4 AND LONGERON 5 (6 PLACES)
NOTE: The effectivity of this task is "ALL". To know if this task is applicable for your aircraft, refer to the MPD task applicability and the weight variant data given in the SRM introduction.
2. Job Set-up InformationA. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.05RDA1) | Adhesive Film Tape-Masking - - |
| (Material No.08BAA9) | Non Aqueous Cleaner-General - - |
| (Material No.12ABB1) | Corrosion Preventive Compound-Water Displacing Hard Film - |
| (Material No.12ABC1) | Corrosion Preventive Compound_Water Displacing Soft Film - |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 825 | FORWARD CARGO COMPARTMENT DOOR |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 51-73-11-300-002-A | Repair of Minor Damage on Titanium, Forged Aluminum, or Steel Components |
| TASK 51-75-12-300-001-A | Repair of Major Paint Damage on Light Alloy and Composite Material |
| TASK 51-78-00-916-001-A | Application of Temporary Protection System (TPS) |
| TASK 52-30-00-860-001-A | Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump |
| TASK 52-30-00-860-002-A | Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump |
| TASK 52-31-21-000-013-A | Removal of the Latching Unit |
| SRM 517300 | |
| SRM 517400 | |
| SRM 523000 | |
Latching Hook with the Adjacent Cargo Door FrameSubtask 52-31-11-010-066-B
A. Get Access
(1) Remove the access panel 825AR to get access to the door mechanism of the cargo door.
(2) Open the cargo door and safety it with the actuator safety locks (Ref. AMM TASK 52-30-00-860-001).
(3) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below the opened cargo door.
Subtask 52-31-11-865-067-A (1) Remove the access panel 825AR to get access to the door mechanism of the cargo door.
(2) Open the cargo door and safety it with the actuator safety locks (Ref. AMM TASK 52-30-00-860-001).
(3) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below the opened cargo door.
B. Open, safety and tag this(these) circuit breaker(s):
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/HYD POWER/Y | 3803GX | N30 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/HYD POWER/Y | 3803GX | N31 |
| ** ON A/C ALL | |||
| 122VU | DOORS/CARGO | 1MJ | T12 |
| 123VU | Y HYD/ELEC/PUMP | 3802GX | AB06 |
| 123VU | Y HYD/ELEC/ELEC PUMP/NORM | 3801GX | AB03 |
Subtask 52-31-11-615-051-A
A. Cleaning Procedure
(1) Make sure that the area for inspection is clean. If the inspection area is not clean:
(a) Clean the area with Non Aqueous Cleaner-General - - (Material No.08BAA9) and a Textile-Lint free Cotton - (Material No.14SBA1) .
(2) If there is a Temporary Protection System (TPS) layer applied that prevents the inspection of the area, remove the TPS layer (Ref. AMM TASK 51-78-00-916-001).
Subtask 52-31-11-210-063-B (1) Make sure that the area for inspection is clean. If the inspection area is not clean:
(a) Clean the area with Non Aqueous Cleaner-General - - (Material No.08BAA9) and a Textile-Lint free Cotton - (Material No.14SBA1) .
(2) If there is a Temporary Protection System (TPS) layer applied that prevents the inspection of the area, remove the TPS layer (Ref. AMM TASK 51-78-00-916-001).
B. Detailed Inspection of Locking Hooks and Fork Fittings of Forward Cargo Compartment Door at all Frames, between Longeron 4 and Longeron 5 (6 Places)
(1) Examine the inner surface of each latching hook for wear, chafe marks and cracks:
(a) If you find marks, measure the depth of the damage:
(c) If the latching hook has marks with a depth of more than 0.3 mm (0.0118 in.), replace it (Ref. AMM TASK 52-31-21-000-013).
(d) If you find a crack, replace the latching hook (Ref. AMM TASK 52-31-21-000-013).
(2) Examine the fork fittings of each door frame and the adjacent skin area for scratches, marks, cracks and corrosion:
(a) If you find a scratch or a mark:
Subtask 52-31-11-916-054-A (1) Examine the inner surface of each latching hook for wear, chafe marks and cracks:
(a) If you find marks, measure the depth of the damage:
- Marks up to a depth of 0.1 mm (0.0039 in.) are permitted.
(c) If the latching hook has marks with a depth of more than 0.3 mm (0.0118 in.), replace it (Ref. AMM TASK 52-31-21-000-013).
(d) If you find a crack, replace the latching hook (Ref. AMM TASK 52-31-21-000-013).
(2) Examine the fork fittings of each door frame and the adjacent skin area for scratches, marks, cracks and corrosion:
(a) If you find a scratch or a mark:
- find the limits of the damaged area SRM 523000
- Remove the damage when it is less than the limit SRM 517300
- If the scratch or mark is larger than the limit, repair the fork fitting or replace it (Ref. SRM 52-30-00).
- find the limits of the corroded area SRM 523000
- Remove the damage when it is less than the limit SRM 517400
- If the corroded area is larger than the limit, repair the fork fitting or replace it SRM 523000.
C. Application of Temporary Protection System (TPS)
(1) Apply Adhesive Film Tape-Masking - - (Material No.05RDA1) on the items adjacent to the area: the seals, bellows, door mechanisms, proximity switches and fittings.
(2) If there is a TPS layer, do a check of the condition of the TPS layer (Ref. AMM TASK 51-78-00-916-001).
(4) If, before the inspection:
5. Close-up(1) Apply Adhesive Film Tape-Masking - - (Material No.05RDA1) on the items adjacent to the area: the seals, bellows, door mechanisms, proximity switches and fittings.
(2) If there is a TPS layer, do a check of the condition 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. If you think that the TPS layer is in the correct condition, you can apply a new layer (as a spray) on the layer.
(3) If the TPS layer is damaged, remove the TPS layer and apply a new layer of Corrosion Preventive Compound_Water Displacing Soft Film - (Material No.12ABC1) or Corrosion Preventive Compound-Water Displacing Hard Film - (Material No.12ABB1) . (4) If, before the inspection:
- there was removal of the TPS layer
or - the inspection area was cleaned with high pressure water, steam, solvents, and/or cleaning agents.
Subtask 52-31-11-865-068-A
A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 52-31-11-410-066-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/HYD POWER/Y | 3803GX | N30 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/HYD POWER/Y | 3803GX | N31 |
| ** ON A/C ALL | |||
| 122VU | DOORS/CARGO | 1MJ | T12 |
| 123VU | Y HYD/ELEC/PUMP | 3802GX | AB06 |
| 123VU | Y HYD/ELEC/ELEC PUMP/NORM | 3801GX | AB03 |
B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access panel 825AR.
(3) Remove the actuator safety locks and close the cargo door (Ref. AMM TASK 52-30-00-860-002).
(4) Remove the access platform(s).
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access panel 825AR.
(3) Remove the actuator safety locks and close the cargo door (Ref. AMM TASK 52-30-00-860-002).
(4) Remove the access platform(s).