(9)  
Move interior control handle to the door latched position.

(a)  
Aft entry door should center on door stops.

(b)  
Door latch pin should move to the latched position. Check that latch pin engages door a minimum of 0.75 inch.

(c)  
Exterior control handle should be in door latched position and flush with handle housing.

(d)  
The AFT ENTRY light on panel P5, both MASTER CAUTION lights, and the DOORS

light of the master caution annunciator should be extinguished. (l0) Move exterior control handle to the door unlatched position.
(a)  
The interior control handle should move to the door unlatched position.

(b)  
Door latch pin should move to the unlatched position. Check that latch pin does not exceed 0.16 inch extension from support fitting.

(c)  
Aft entry door should raise to clear the door cam rollers.

52-14-0  Feb 15/70
Page 514
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.

(11)
Extend and retract airstair using external control switch.

(12)
Move exterior control handle to the door latched position.

(13)
Move interior control handle to the emergency extend position. Maximum force required shall not exceed 65 pounds. 

NOTE:  Under adverse conditions of high winds, extreme cold or airplane tilt, it may be required to manually push the airstair out the doorway. After airstair has partially extended, personnel then must lift up and push out the center ladder section.
CAUTION:  IF AIRSTAIR IS EXTENDED MORE THAN 132 INCHES DURING EMERGENCY OPERATION, SECONDARY STRUCTURE MAY BE DAMAGED.
(14)
Check that a maximum elapsed time of 20 seconds is required for full extension of airstair.

(15)
With control handle in the emergency extend position and airstair fully extended, place interior airstair control switch in the retract position. There should be no movement in the drive unit. Release switch.

(16)
Move interior control handle to the door unlatched position.

(17)
Arm the emergency extension system. Refer to Aft Airstair Emergency Extension Mechanism, 52-14-21.

(18)
Move interior control handle to the door latched position.

(19)
Move exterior control handle to the emergency extend position. Maximum force required shall not exceed 90 pounds.

NOTE:  After airstair has extended partially, complete extension by pulling down on door from side.

(20)
Check that a maximum elapsed time of 20 seconds is required for full extension of airstair.

(21)
With control handle in the emergency position, place exterior airstair control switch in the retract position. There should be no movement in the drive unit. Release switch .

(22)
Move exterior control handle to the door unlatched position. 

(23)
Arm and test the emergency extension system. Refer to Aft Airstair Emergency Extension Mechanism, 52-14-21.

(24)
Move control handle to the unlatched position and retract airstair using internal control switch.

(25)
Place control switch in the extend position and rotate airstair to approximate midtravel. Move control switch to the retract position and airstair should reverse its direction of travel.

(26)
With airstair retracted, check that red marks on door lining and door frame are in alignment within 0.01 inch.

(27)
Check that crash restraint latch at bottom of doorway is engaged by pulling lower end of center ladder inboard. The center ladder should not move more than 1 inch from its retracted position.

500 
May 15/69  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  52-14-0 Page 515 

500 
52-14-0 Page 516  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  Aug 01/95 

AFT ENTRY DOOR SEAL DEPRESSOR - ADJUSTMENT/TEST
EFFECTIVITY
Airplanes With Aft Airstair
1.  Seal Depressor Adjustment
A.  General
(1)  These procedures will be required only when an aft entry door has been replaced or the door was readjusted requiring readjusting seal depressor. The seal depressor should not be spliced until seal depressor has been adjusted properly.
B.  Equipment and Materials
(1)  
Solvent - BMS 11-7 or Methyl Ethyl Ketone

(2)  
Adhesive BMS 5-19, Class 3-1/2, Type 44

(3)  
Durometer - Rex Model A or Shore A

(4)  
Paint Stripper - Del Chem. EZ

C.  Adjust Seal Depressor
(1)  
Remove foil and splice angles from seal depressors if required.
　
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