Functional Check of Mechanical Locking Indication

TASK 52-10-00-720-004-A
Functional Check of Mechanical Locking Indication

WARNING: DO NOT OPEN THE PASSENGER/CREW DOOR IF THE WIND SPEED IS MORE THAN 65 KNOTS.

WARNING: BEFORE YOU START WORK ON THE DOOR, MAKE SURE THAT:

THE EMERGENCY CONTROL HANDLE IS IN THE DISARMED POSITION WITH THE SAFETY PIN INSTALLED.
THE PERCUSSION LEVER OF THE DOOR-DAMPER AND EMERGENCY-OPERATION CYLINDER IS IN THE DISARMED POSITION WITH THE SAFETY PIN INSTALLED.

IF YOU DO NOT OBEY THESE INSTRUCTIONS, THE DOOR CAN OPEN WITH FORCE OR THE ESCAPE SLIDE CAN DEPLOY SUDDENLY. THIS CAN CAUSE INJURY AND/OR DAMAGE.

WARNING: STOP THE OPENING PROCEDURE IF THE RED WARNING LIGHT FLASHES. IF THE RED WARNING LIGHT FLASHES, REMAINING PRESSURE CAN CAUSE THE DOOR TO OPEN SUDDENLY AND CAN:

KILL OR CAUSE SERIOUS INJURY TO PERSONS
CAUSE DAMAGE TO THE AIRCRAFT.

ZONE: 831
ZONE: 832
ZONE: 841
ZONE: 842

1. Reason for the Job
Refer to the MPD TASK: 521000-09
FUNCTIONAL CHECK OF MECHANICAL LOCKING INDICATION
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
831	FORWARD PASSENGER/CREW DOOR
832	AFT PASSENGER/CREW DOOR
841	FORWARD PASSENGER/CREW DOOR
842	AFT PASSENGER/CREW DOOR
831, 832, 841, 842

C. Referenced Information

REFERENCE	DESIGNATION
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 52-10-00-860-001-A	Special Precautions before Work on the Passenger/Crew Door
TASK 52-10-00-860-002-A	Special Precautions after Work on the Passenger/Crew Door
TASK 52-11-21-820-001-A	Adjustment/Test of the Door Locking Mechanism of the FWD Passenger/Crew Door
TASK 52-13-21-820-001-A	Adjustment of the Locking Hook of the Aft Passenger/Crew Door
Visual Indicator of the Door Locking Mechanism

3. Job Set-up
Subtask 52-10-00-010-054-A

A. Get Access
(1) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position in front of the applicable passenger/crew door.
(2) Open the applicable passenger/crew door 831 or 841 or 832 or 842 (Ref. AMM TASK 52-10-00-010-001).
(3) Apply safety precautions before work on the door (Ref. AMM TASK 52-10-00-860-001).

4. Procedure
Subtask 52-10-00-720-056-A

A. Functional Test of the Visual Indicator.

Visual Indicator of the Door Locking Mechanism

(1) Close the door from the inside.
(a) Through the window of the indicator plate (1), make sure that the LOCKED indication comes into view.
(2) Unlock the door with the inner control handle.
(a) Through the window of the indicator plate (1), make sure that the UNLOCKED indication comes into view and then goes out of view.
(b) If necessary, adjust the locking mechanism:

for the forward passenger/crew door (Ref. AMM TASK 52-11-21-820-001),
for the aft passenger/crew door (Ref. AMM TASK 52-13-21-820-001).

5. Close-up
Subtask 52-10-00-410-055-A

A. Close Access
(1) Obey the special precautions after the work on the door. (Ref. AMM TASK 52-10-00-860-002)
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Close the applicable passenger/crew door 831 841 832 842 (Ref. AMM TASK 52-10-00-410-001).
(4) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.02 06:27:17 UTC