(a)  
Examine the external skin.
 1) Look for cracks.

 S 866-004-B00
 S 016-005-B00
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 2) Look for corrosion.
 (b)  
Examine the internal skin.
 1) Look for cracks.
 2) Look for corrosion.

 (c)  
Examine the hinge fairings.
 1) Look for loose fasteners.
 2) Look for fasteners that are not there.

 (d)  
Examine the internal frames and brackets.
 1) Look for cracks.
 2) Look for corrosion.
 3) Look for loose fasteners.

 (e)  
Examine the housing of the handle mechanism.
 1) Look for cracks.
 2) Look for corrosion.
 3) Look for loose fasteners.

 (f)  
Examine the window.
 1) Look for cracks.

 (g)  
Examine the window frame.
 1) Look for cracks.
 2) Look for corrosion.

 (h)  
Examine the mechanism that operates the door.
 1) Look for cracks.
 2) Look for corrosion.
 3) Look for worn areas.
 4) Look for loose fasteners.

 (i)  
Examine the latches and latch rollers. 1) Look for cracks. 2) Look for corrosion. 3) See that the latch rollers.are clean and move easily.

 (j)  
Examine the door stop pins and the door stop fittings. 1) Look for cracks. 2) Look for corrosion. 3) See that the stop fittings are clean.

 (k)  
Examine the drain holes.
 1) Look for blockage.

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 (6)  
Visually examine the door seals.

 (a)  
Look for cracks.

 (b)  
Look for tears.

 (c)  
Look for holes.

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 S 226-013-B00
 (7)  Examine the door stop pins to make sure they align with the door stop fittings (Fig. 601).
 NOTE: Flight loads and fuselage loads cause the marks on the door
____
 stop pins.

 S 226-016-B00
 (8)  
Examine the top and bottom guide plates and guide rollers.

 (a)  
Look for worn areas on the guide rollers.

 (b)  
Look for worn areas on the lower guide plate.

 (c)  
Look for worn areas on the top guide plate.

 (d)  
Do a check of the clearance between the top and the bottom guide plates (Fig. 602).

 S 866-008-B00
 (9)  
Close the forward entry door.

 S 216-009-B00

 (10)
 Visually examine the door seal to make sure it touches the door frame correctly.

 S 416-017-B00

 (11)
 Install the door lining and insulation (Ref 52-11-31/401).

 S 286-010-B00

 (12)
 Do a check of the operation of the snubber in the open direction.

 (a)  
Open the door quickly.

 (b)  
Make sure the snubber holds the door while it moves to the open position.

 S 286-011-B00
 (13)
 Do a check of the operation of the snubber when the door closes.

 (a)  
Close the door quickly.

 (b)  
Make sure that the snubber holds the door while it moves to the closed position.

 (14)
 Remove the maintenance stand.

 S 026-019-B00
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