Operational Check of Deadbolt

TASK 52-51-00-710-008-A
Operational Check of Deadbolt

ZONE: 220

1. Reason for the Job
Refer to the MPD TASK: 525111-07
OPERATIONAL CHECK OF DEADBOLT
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
220	FWD CAB UTILITY AREAS

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 52-51-00-00	PASSENGER COMPARTMENT FIXED INTERIOR DOORS - DESCRIPTION AND OPERATION

3. Job Set-up
Subtask 52-51-00-860-104-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the cockpit door is opened.
(2) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

Subtask 52-51-00-865-090-A ** ON A/C NOT FOR ALL

B. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
122VU	DOORS CKPT LOCK	1MQ	T13

4. Procedure
Subtask 52-51-00-710-059-A ** ON A/C NOT FOR ALL

A. Operational Test of the Dead Bolt Assembly
(1) Do the operational test of the dead bolt assembly from the cockpit side to make sure that it operates satisfactorily. For the location of this component, refer to Para. Component Location (Ref. AMM D/O 52-51-00-00).

ACTION	RESULT
1.On center electrical release-strike 31MQ:	On center electrical release-strike 31MQ:
Move the lock bar up and hold it.	The spring of the lock bar is compressed. The spring-loaded dead bolt becomes free and extends from the housing.
Release the lock bar.	The lock bar moves automatically down and its arm causes a mechanical blockage of the dead bolt.
Move the lock bar up and hold it.	The spring of the lock bar is compressed. The arm of the lock bar moves up and the dead bolt can move freely.
Push the dead bolt in and hold it.	The dead bolt moves to the retracted position and stays in this position.
Release the lock bar.	The lock bar moves automatically down and engages in the pin of the dead bolt.
Release the lock bar.	The dead bolt is locked in the retracted position.

Subtask 52-51-00-865-135-A ** ON A/C NOT FOR ALL

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
122VU	DOORS CKPT LOCK	1MQ	T13

5. Close-up
Subtask 52-51-00-860-105-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to the serviceable condition.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.02 07:24:02 UTC