Technical data

13773-001
52-10
Page 1
52-10PASSENGER AND CREW DOORS
PASSENGER AND CREW DOORS
1. DESCRIPTION AND OPERATION
The two crew/passenger doors incorporate a flush-mount outside door handle, key-operated door lock,
and a conventional inside door handle. The door latch handle is centered under the window. Latching pins
at the rear of each door are engaged by that door’s handle. To open either door from outside the airplane;
push in on the forward end handle to release the handle from the flush mount position, rotate handle down
and forward to the OPEN position, and the gas strut will then automatically assist in raising the door to the
full up position. To close the door from inside of the airplane, pull the door shut and rotate handle to the
CLOSED position. When handle is rotated to the CLOSED position, a detent holds the handle in the cor-
rect position. To close the doors from outside of the airplane, close the door with the interior handle in the
unlatched position and then latch the door by rotating the outside door handle up and forward to the
CLOSED position.
Rotating the door handle either inserts or retracts two round pins into or out of receivers on the aft door
jamb. The round pins operate by push-pull cable and linkage. The handle mechanism is designed to allow
the inside handle to operate while the outside handle stays nestled into a depression, yet the outside han-
dle will twist the inside door handle to the open or closed position. A detent pin, which is a roller follower on
the handle actuator disk, holds the handle assembly in the fully latched, and the open, positions. The
inside door handle in the closed position is nestled into the armrest, and in the unlatched position, juts up
into the crew's forearm. The mechanism has a spring detent which requires a deliberate effort to over-
come. This is the only locking mechanism on the inside.
The external security lock doesn’t hinder egress from within. Their function is only to disable the external
handle by holding it in it's recess. At least one of the two doors is unlocked anytime the airplane is occu-
pied, for it must be unlocked to enter, and it cannot be locked from inside.
To lock crew/passenger entry doors when leaving the airplane, insert the key into the lock and rotate
accordingly. To enter the airplane through either crew entry door, unlock the door handle using a key, and
rotate exterior door handle to the open position. The gas strut will automatically raise the door to the full up
position. Front seat armrests are integral with the doors’ interior.
30 Nov 2000