(2)
Rotate airstair to the full extended position using emergency extension system.
CAUTION: DO NOT EXTEND AIRSTAIR WHEN AIRPLANE IS ON JACKS WITHOUT PLACING A SUPPORT UNDER END OF AIRSTAIR. AIRSTAIR SHOULD NOT EXTEND MORE THAN 117 INCHES BELOW ENTRY DOOR OR AIRSTAIR COMPONENTS MAY CONTACT BODY STRUCTURE.
(3)
Open aft airstair circuit breaker on P6 panel.
(4)
Remove door from airstair carriage by removing attaching bolts from mounting plates.
NOTE: If door is to be reinstalled without readjustment, mark mounting plates on door and airstair so the door can be reinstalled on airstair in same position. (See figure 401.)
Aug 15/71 52-14-0 Page 401
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
Aft Entry Door and Airstair Installation 500
52-14-0 Figure 401 (Sheet 1) Nov 15/67
Page 402
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
500 Aft Entry Door and Airstair Installation
May 15/68 Figure 401 (Sheet 2) 52-14-0
Page 403
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
Aft Entry Door and Airstair Installation 500
52-14-0 Figure 401 (Sheet 3) May 15/71
Page 404
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
Aft Entry Door and Airstair Installation 52-14-0
500 Figure 401 (Sheet 4) Page 405
May 15/71
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
(5) Remove latch stop from lower aft edge of door if door is to be adjusted.
D. Install Aft Entry Door (When Door and/or Airstair Require Adjustment)
(1)
Adjust door and/or airstair. Refer to Aft Entry Door and Airstair - Adjustment/Test.
(2)
Install airstair per paragraph 3.D.
(3)
Install door and check preadjusted door in entryway is within + 0.01 inch of index marks on door and body skin.
(4)
Position upper segment of airstair 4.1 2 (+ 0.06) inches from center of upper stop fitting. (See section A-A.)
CAUTION: DO NOT ALLOW DISTANCE BETWEEN UPPER SEGMENT AND STOP FITTING TO EXCEED 4.50 INCHES WHILE POSITIONING AIRSTAIR OR DAMAGE MAY OCCUR.
NOTE: A block should be placed under the lower inboard edge of the stairs to maintain the above dimension. The control handle should be latched.
(5)
Adjust or align mounting plates on each corner of carriage to fit mounting plates on door. (See figure 401.) Install and tighten bolts. Do not preload shockmounts.
(6)
Latch and unlatch door several times and check door is not binding on door cams or latch pin and check index marks on door and body are aligned within + 0.03 inch.
(7)
Latch door and check gap between latch pin and latch stop fitting on lower edge of door is
0.06 (+0.05/-0.02) inch.
(8)
Check force to move handle to the door unlatched position does not exceed 45 pounds when measured at an angle of approximately 30 degrees down from upper surface of handle.
(a) If force required exceeds 45 pounds, perform the following to locate cause: 1) Check position of upper door lining per section B-B and adjust if required. 2) Realign carriage mounting plates. 3) Test control console per 52-14-11, Adjustment/Test.
(9)
Check force to move handle from unlatched to latch position does not exceed 15 pounds when measured at an angle of approximately 30 degrees down from upper surface of handle.
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