DOC AIRBUS | AMM A320FInstallation of the Hatch Locking Mechanism
TASK 52-21-11-400-002-A
Installation of the Hatch Locking Mechanism
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Expendable Parts
D. Referenced Information
3. Job Set-up
Subtask 52-21-11-860-054-A ** ON A/C NOT FOR ALL
Subtask 52-21-11-910-050-C ** ON A/C NOT FOR ALL
Subtask 52-21-11-410-053-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 06:27:34 UTC
Installation of the Hatch Locking Mechanism
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | Torque wrench: range to between 0.045 and 0.039 m.daN (3.98 and 3.45 lbf.in )  |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.03HBD9) | Synthetic Ester base Grease-General Purpose Low Temp - |
| (Material No.06AEA1) | Polysulfide Sealant-Low Adhesion Brushable - |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 11 | COTTER PIN | AIPC 52-21-11-40-040 |
| 16 | COTTER PIN | AIPC 52-21-11-40-040 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 20-28-00-912-802-A | Electrical Bonding - General Maintenance Procedure |
| TASK 25-23-47-000-001-A | Removal of the Lining from the Emergency Exit Hatches |
| TASK 25-23-47-400-001-A | Installation of the Lining on the Emergency Exit Hatches |
| TASK 52-10-00-010-001-A | Opening of the Passenger/Crew Door |
| TASK 52-10-00-410-001-A | Closing of the Passenger/Crew Door |
| TASK 52-21-00-200-001-A | Detailed Inspection of Emergency Exits, Internal Structure and Load Transmitting Profile, LH/RH |
| TASK 52-21-11-000-001-A | Removal of the Emergency Exit Hatch |
| TASK 52-21-11-400-001-A | Installation of the Emergency Exit Hatch |
| TASK 52-21-11-820-002-A | Adjustment of the Hatch Control Handle |
Locking MechanismSubtask 52-21-11-860-054-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) Make sure that the FWD or the AFT passenger/crew door is opened (Ref. AMM TASK 52-10-00-010-001).
(2) Make sure that the applicable emergency exit hatch is removed (Ref. AMM TASK 52-21-11-000-001).
(3) Make sure that the lining is removed from the applicable emergegecy exit hatch (Ref. AMM TASK 25-23-47-000-001).
4. Procedure(1) Make sure that the FWD or the AFT passenger/crew door is opened (Ref. AMM TASK 52-10-00-010-001).
(2) Make sure that the applicable emergency exit hatch is removed (Ref. AMM TASK 52-21-11-000-001).
(3) Make sure that the lining is removed from the applicable emergegecy exit hatch (Ref. AMM TASK 25-23-47-000-001).
Subtask 52-21-11-910-050-C ** ON A/C NOT FOR ALL
A. Preparation for Installation
(1) Make sure that the parts retained from the removed component are clean and in the correct condition.
(2) Make sure that the mating areas of the bearing brackets (2) and the hatch structure are clean and in the correct condition.
(3) Apply Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) to the bolts (1), (6), (7), (12),(31), (41) and (42).
(4) Apply Polysulfide Sealant-Low Adhesion Brushable - (Material No.06AEA1) to the mating area of the hatch control handle (14) and the bearing brackets (2).
(5) Make sure that the bonding areas of the bolts (6) and (42) are correctly prepared (Ref. AMM TASK 20-28-00-912-802).
Subtask 52-21-11-420-050-C ** ON A/C NOT FOR ALL (1) Make sure that the parts retained from the removed component are clean and in the correct condition.
(2) Make sure that the mating areas of the bearing brackets (2) and the hatch structure are clean and in the correct condition.
(3) Apply Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) to the bolts (1), (6), (7), (12),(31), (41) and (42).
(4) Apply Polysulfide Sealant-Low Adhesion Brushable - (Material No.06AEA1) to the mating area of the hatch control handle (14) and the bearing brackets (2).
(5) Make sure that the bonding areas of the bolts (6) and (42) are correctly prepared (Ref. AMM TASK 20-28-00-912-802).
B. Installation of the Hatch Locking Mechanism
(1) Install the hatch control handle (14) as follows:
(a) Put the hatch control handle (14) with the plate (30) in position.
(d) To adjust the offset, change the position of the washers (32) between the hatch control handle (14) and the hatch structure.
(h) Apply Polysulfide Sealant-Low Adhesion Brushable - (Material No.06AEA1) on the ends of the screws (40) and on the inner area of the flush panel (36).
(i) Install the bolts (41) and (42), the washers (35) and the nuts (34).
(k) Attach the connection rod (9) on the hatch control handle (14) with the bolt (12), the washers (13) and the nut (15).
(l) Tighten the nut (15) and safety it with AIPC 52-21-11-40-040 COTTER PIN (16).
(2) Install the locking shaft unit (17) as follows:
(a) Put the locking shaft unit (17) and the shim plate (44) in the installation position.
(b) Attach the bearing brackets (2) of the locking shaft unit (17) with the bolts (1) and the nuts (3).
(c) Put the bonding jumper in position to the bearing bracket (2) and install the bolt (6) and the nut (4) (Ref. AMM TASK 20-28-00-912-802).
(d) Install the connection rod (9) on the locking hook (18) with the bolt (7), the washers (8) and the nut (10).
(e) Tighten the nut (10) and safety it with the new AIPC 52-21-11-40-040 COTTER PIN (11).
(f) Adjust the overcenter position of the hatch control handle (1) (Ref. AMM TASK 52-21-11-820-002).
Subtask 52-21-11-210-050-A ** ON A/C NOT FOR ALL (1) Install the hatch control handle (14) as follows:
(a) Put the hatch control handle (14) with the plate (30) in position.
NOTE: Make sure that the handle seal (38) touches the frame panel (37).
(b) Install the bolts (31), the washers (32) and nuts (33). NOTE: Make sure that the push plate (39) is installed symmetrically in the opening of the hatch skin.
(c) Make sure that the push plate (39) is in line with the outer skin of the hatch structure. (d) To adjust the offset, change the position of the washers (32) between the hatch control handle (14) and the hatch structure.
NOTE: Make sure that the handle seal (38) touches the frame panel (37).
(e) Measure the distance between the push plate (39) and the opening of the outer hatch skin on all the sides. NOTE: The distance must be between 0.5 mm (0.0197 in.) and 2.5 mm (0.0984 in.) and symmetrical.
NOTE: If the distance is not in the given limits, it is not possible to adjust the push plates.
(f) If the distance is not symmetrical, change the position of the push plate (39) as follows: - Loosen the screws (40) and move the push plate (39) so that the clearance is correct.
- TORQUE the screws (40) to between 0.045 and 0.039 m.daN (3.98 and 3.45 lbf.in ) .
(h) Apply Polysulfide Sealant-Low Adhesion Brushable - (Material No.06AEA1) on the ends of the screws (40) and on the inner area of the flush panel (36).
(i) Install the bolts (41) and (42), the washers (35) and the nuts (34).
NOTE: The bolt (42) is a bonding point (Ref. AMM TASK 20-28-00-912-802).
(j) Adjust the overcenter position of the hatch control handle (14) (Ref. AMM TASK 52-21-11-820-002). (k) Attach the connection rod (9) on the hatch control handle (14) with the bolt (12), the washers (13) and the nut (15).
(l) Tighten the nut (15) and safety it with AIPC 52-21-11-40-040 COTTER PIN (16).
(2) Install the locking shaft unit (17) as follows:
(a) Put the locking shaft unit (17) and the shim plate (44) in the installation position.
(b) Attach the bearing brackets (2) of the locking shaft unit (17) with the bolts (1) and the nuts (3).
(c) Put the bonding jumper in position to the bearing bracket (2) and install the bolt (6) and the nut (4) (Ref. AMM TASK 20-28-00-912-802).
(d) Install the connection rod (9) on the locking hook (18) with the bolt (7), the washers (8) and the nut (10).
(e) Tighten the nut (10) and safety it with the new AIPC 52-21-11-40-040 COTTER PIN (11).
(f) Adjust the overcenter position of the hatch control handle (1) (Ref. AMM TASK 52-21-11-820-002).
C. Visual Inspection
(1) Install the emergency exit hatch (Ref. AMM TASK 52-21-11-400-001).
(4) Make sure that the skin offset between the emergency exit hatch and the fuselage is correct (Ref. AMM TASK 52-21-00-200-001).
5. Close-up(1) Install the emergency exit hatch (Ref. AMM TASK 52-21-11-400-001).
NOTE: Do not remove the lockpin assembly on the inflation reservoir at this stage and make sure that the latch pin remains in the disarmed position.
(2) Make sure that the handle seal (38) of the flush panel (36) is in the correct position to prevent that the cabin pressure decreases. NOTE: If necessary, change the position of the hatch control handle (14) so that the handle seal (38) and the push plate (39) are correctly installed.
(3) Operate the hatch control handle (14) to make sure that the locking function is correct. (4) Make sure that the skin offset between the emergency exit hatch and the fuselage is correct (Ref. AMM TASK 52-21-00-200-001).
Subtask 52-21-11-410-053-A ** ON A/C NOT FOR ALL
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the lining on the applicable emergency exit hatch (Ref. AMM TASK 25-23-47-400-001).
(3) Close the FWD passenger/crew door (Ref. AMM TASK 52-10-00-410-001).
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the lining on the applicable emergency exit hatch (Ref. AMM TASK 25-23-47-400-001).
(3) Close the FWD passenger/crew door (Ref. AMM TASK 52-10-00-410-001).