Removal of the Hatch Locking Mechanism

TASK 52-21-11-000-002-A
Removal of the Hatch Locking Mechanism

1. Reason for the Job
To replace the locking shaft unit and/or the hatch control handle.
2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TASK 25-23-47-000-001-A	Removal of the Lining from the Emergency Exit Hatches
TASK 52-10-00-010-001-A	Opening of the Passenger/Crew Door
TASK 52-21-11-000-001-A	Removal of the Emergency Exit Hatch
Locking Mechanism

3. Job Set-up
Subtask 52-21-11-010-053-A ** ON A/C NOT FOR ALL

A. Get Access
(1) Open the FWD or the AFT passenger/crew door (Ref. AMM TASK 52-10-00-010-001).
(2) Remove the applicable emergency exit hatch (Ref. AMM TASK 52-21-11-000-001).
(3) Remove the lining from the applicable emergency exit hatch (Ref. AMM TASK 25-23-47-000-001).

4. Procedure
Subtask 52-21-11-020-050-C ** ON A/C NOT FOR ALL

A. Removal of the Hatch Locking Mechanism
(1) Remove the hatch control handle (14) as follows:
(a) Remove and discard the cotter pin (16) from the nut (15).
(b) Remove the nut (15), the washers (13) and the bolt (12) to disconnect the connection rod (9) from the hatch control handle (14).
(c) Remove the nuts (34), the washers (35) and the bolts (41) and (42) from the hatch control handle (14).
(d) Remove the nuts (33), the washers (32) and the bolts (31) from the hatch control handle (14).
(e) Remove the hatch control handle (14) and the plate (30) from the hatch structure.
(2) Remove the locking shaft unit (17) as follows:
(a) Remove and discard the cotter pin (11) from the nut (10).
(b) Remove the nut (10) and the washer (8) from the bolt (7).
(c) Remove the bolt (7) with the washer (8) and disconnect the connection rod (9) from the locking hook (18).
(d) Remove the nut (4) and the bolt (6) to disconnect the bonding jumper (5).
(e) Remove the nuts (3) and the bolts (1) from the bearing brackets (2).
(f) Remove the locking shaft unit (17) and the shim plate (44) from the hatch structure.

[Rev.10 from 2021] 2026.04.02 06:27:34 UTC