DOC AIRBUS | AMM A320FDeactivation of the Locking Hooks and Spools
TASK 52-31-00-040-003-A
Deactivation of the Locking Hooks and Spools
MMEL 52-30-04A
CARGO DOOR LOCKING HOOKS AND SPOOLS (ROLLERS) (FAA ONLY)
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 52-31-00-010-053-A
Subtask 52-31-00-040-051-A
Subtask 52-31-00-860-059-A
[Rev.10 from 2021]
2026.04.02 06:27:49 UTC
Deactivation of the Locking Hooks and Spools
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.
Task Summary
1. Reason for the Job| Access | Test | Specific Tools | Mhr | E/T | Nb Men |
|---|---|---|---|---|---|
| YES | NO | NO | 1.0 | 1.0 | 1 |
MMEL 52-30-04A
CARGO DOOR LOCKING HOOKS AND SPOOLS (ROLLERS) (FAA ONLY)
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 825AR |
| REFERENCE | DESIGNATION |
|---|---|
| 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 |
Locking Hooks and SpoolsSubtask 52-31-00-010-053-A
A. Get Access
(1) Open the FWD cargo compartment door (referred to as cargo door) and safety it with the actuator safety locks (Ref. AMM TASK 52-30-00-860-001).
(2) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below the opened cargo door.
(3) Remove the access panel 825AR from the cargo door.
Subtask 52-31-00-860-061-A (1) Open the FWD cargo compartment door (referred to as cargo door) and safety it with the actuator safety locks (Ref. AMM TASK 52-30-00-860-001).
(2) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below the opened cargo door.
(3) Remove the access panel 825AR from the cargo door.
B. Aircraft Maintenance Configuration
(1) Deactivate the interlock mechanism of the opened cargo door as follows:
(b) Turn the locking handle up to the locked position and push it into the recess of the handle flap.
4. Procedure(1) Deactivate the interlock mechanism of the opened cargo door as follows:
NOTE: This procedure is only necessary, if one of the locking hooks is damaged or inoperative.
(a) Press the roller lever of the interlock mechanism outboard to release the blockage of the locking shaft. (b) Turn the locking handle up to the locked position and push it into the recess of the handle flap.
Subtask 52-31-00-040-051-A
A. Deactivation of the Locking Hooks and Spools
(1) Deactivate the damaged or inoperative spool as follows:
(a) Remove and discard the cotter pin (1) from the nut (2).
(b) Remove the nut (2) and the washer (3) from the eccentric bolt (9).
(c) Remove the nuts (10) and the washers (11) from the special bolts (12) of the door frame fitting (13).
(d) Remove the serrated plate (4) from the adjusting bush (5).
(e) Hold the spool (7) and remove the eccentric bolt (9) together with the serrated plate (8) from the door frame fitting (13).
(f) Disengage the serrated plate (8) from the eccentric bolt (9).
(g) Remove the eccentric bush (6) from the spool (7).
(h) Remove the adjusting bush (5) from the door frame fitting (13).
(2) Deactivate the damaged or inoperative locking hook as follows:
(a) Remove and discard the cotter pin (15) from the nut (16).
(b) Remove the nut (16), the washers (17) and (19) and the bolt (20) from the lower fork end of the linkage (18).
(c) Move the linkage (18) to disconnect it from the locking hook (24).
(d) Remove and discard the cotter pin (21) from the nut (22).
(e) Remove the nut (22) and the washer (23) from the locking hook bolt (26).
(f) Hold the locking hook (24) and remove the washer (25) and the locking hook bolt (26) from the cargo door frame.
(g) Remove the locking hook (24) from the cargo door frame.
Subtask 52-31-00-210-050-A (1) Deactivate the damaged or inoperative spool as follows:
(a) Remove and discard the cotter pin (1) from the nut (2).
(b) Remove the nut (2) and the washer (3) from the eccentric bolt (9).
(c) Remove the nuts (10) and the washers (11) from the special bolts (12) of the door frame fitting (13).
(d) Remove the serrated plate (4) from the adjusting bush (5).
(e) Hold the spool (7) and remove the eccentric bolt (9) together with the serrated plate (8) from the door frame fitting (13).
(f) Disengage the serrated plate (8) from the eccentric bolt (9).
(g) Remove the eccentric bush (6) from the spool (7).
(h) Remove the adjusting bush (5) from the door frame fitting (13).
(2) Deactivate the damaged or inoperative locking hook as follows:
(a) Remove and discard the cotter pin (15) from the nut (16).
(b) Remove the nut (16), the washers (17) and (19) and the bolt (20) from the lower fork end of the linkage (18).
(c) Move the linkage (18) to disconnect it from the locking hook (24).
(d) Remove and discard the cotter pin (21) from the nut (22).
(e) Remove the nut (22) and the washer (23) from the locking hook bolt (26).
(f) Hold the locking hook (24) and remove the washer (25) and the locking hook bolt (26) from the cargo door frame.
(g) Remove the locking hook (24) from the cargo door frame.
B. Visual Inspection
(1) Examine the remaining locking hooks as follows:
(a) Make sure that the other locking hooks are not damaged.
(b) Make sure that you cannot turn the other locking hook bolts manually.
(2) Examine the remaining spools as follows:
(a) Make sure that the other spools are not damaged.
(b) Make sure that the other eccentric bolts and the eccentric bushes are in the correct condition.
(c) Make sure that the other lock fittings are not damaged.
5. Close-up(1) Examine the remaining locking hooks as follows:
(a) Make sure that the other locking hooks are not damaged.
(b) Make sure that you cannot turn the other locking hook bolts manually.
(2) Examine the remaining spools as follows:
(a) Make sure that the other spools are not damaged.
(b) Make sure that the other eccentric bolts and the eccentric bushes are in the correct condition.
(c) Make sure that the other lock fittings are not damaged.
Subtask 52-31-00-860-059-A
A. Put the aircraft back to the serviceable condition.
(1) Close and lock the cargo door (Ref. AMM TASK 52-30-00-860-002).
(2) Examine the vent door to make sure that it is closed and aligns with the cargo door skin.
(3) Make sure that the indications of the ECAM system in the cockpit shows that the cargo door is correct closed and locked.
(4) Put a placard in the cockpit to tell the flight crew that one of the spools and/or locking hooks is deactivated.
(5) Make an entry in the aircraft technical log that one of the spools and/or one of the locking hooks is deactivated.
Subtask 52-31-00-410-053-A (1) Close and lock the cargo door (Ref. AMM TASK 52-30-00-860-002).
(2) Examine the vent door to make sure that it is closed and aligns with the cargo door skin.
(3) Make sure that the indications of the ECAM system in the cockpit shows that the cargo door is correct closed and locked.
(4) Put a placard in the cockpit to tell the flight crew that one of the spools and/or locking hooks is deactivated.
(5) Make an entry in the aircraft technical log that one of the spools and/or one of the locking hooks is deactivated.
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 on the cargo door.
(3) Make sure that you can see the green mark of each safety cam through the indication windows of the door access panel 825AR.
(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 on the cargo door.
(3) Make sure that you can see the green mark of each safety cam through the indication windows of the door access panel 825AR.
(4) Remove the access platform(s).