3. Job Set-up
__________
 Subtask 52-21-00-860-054

 A. Aircraft Maintenance Configuration
 (1)
 Make sure that the hatch is correctly closed and locked (Ref. TASK 52-21-11-400-001).

 (2)
 Install the lockpin assemblies on the inflation reservoirs in the AFT cargo compartment to prevent an accidental escape slide operation (Ref. TASK 25-62-00-481-001).

 4. Procedure
_________
 **ON A/C 001-049, 051-099, 101-149, 201-299,

 (Ref. Fig. 501/TASK 52-21-00-991-001) R **ON A/C 151-199, 401-499,
 (Ref. Fig. 501A/TASK 52-21-00-991-001-A)
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 Subtask 52-21-00-710-052
 A. Operational Test
 (1)
 Do this test to examine the operation of the hatch locking mechanism from the inner and outer side,

 (2)
 Do this test to examine the operation of the latch pin from the Armed in the Disarmed Mode.

 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. In the center of the cabin:
-pull down and remove the cover flap from the hatch.
2. On the hatch structure:
-push the latch pin against the spring and turn its head a quarter turn counterclockwise.
 3. In the center of the cabin:
 -pull the pull-lever of the hatch control handle down and hold the hatch in position.
-carefully lower the top of the hatch into the cabin and remove the hatch In the center of the cabin:
-
the white indicator light SLIDE ARMEDcomes on.

On the hatch structure:

-
the latch pin retracts to theDISARMED position.

 In the center of the cabin:

 -
the retracted latch pin does not operate the adjacent pin of the proximity switch,

 -
the white indication light SLIDE ARMED goes off.

-
the hooks of the locking mechanismdisengage from the upper rollerfittings.

 -
the linkage of the hatch control handle locks the pull lever in this lowered position.

-
the opening of the emergency exit isfree.

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 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
- put the hatch correctly in  - the opening of the emergency exit is
 position of the opening and  closed and the hatch is correctly
 lift the pull lever in its  locked.
 overcenter position .
 4. On the wing:  In the center of the cabin:
 - push the flush panel of the  - the pull handle of the hatch control
 hatch control handle inboards.  handle moves down and operates the
 hooks of the locking mechanism.
 NOTE : Make sure that a second____
 person stops the movement
 when the hatch comes free
 of the cabin lining.
 - the hatch comes inboards and its
 retracted latch pin does not operates
 the release lever of the slide
 release mechanism.
 5. In the center of the cabin:  In the center of the cabin:
 - put the hatch correctly in  - the opening of the emergency exit is
 position of the opening and  closed and the hatch is correctly
 lift the pull lever in its  locked.
 overcenter position .
 - push the latch pin against the  - the latch pin extends in its ARMED
 spring and turn its head a  position and operates the pin of the
 quarter turn clockwise.  related proximity switch.
 - the white indication light SLIDE
 ARMED comes on.
 - install the cover flap on the  - the white indicator light SLIDE ARMED
 hatch lining and push it  goes off.
 against the hatch.
 - examine the position of the  - make sure that the position of the
 hatch seal.  hatch seal is correct. 

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 5. Close-up
________ Subtask 52-21-00-860-055
 A. Put the aircraft back to the serviceable condition.
 (1)
 Remove the lockpin assemblies from the inflations reservoirs (Ref. TASK 25-62-00-081-001).

 (2)
 Make sure that the hatch is correctly closed and locked (Ref. TASK 52-21-11-400-001).
　
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