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Flotation Equipment............. .............................................................. .. 7-4
Hatchet ............ ............................. .. ..................... ...... ................... .......... 7-4
Drag Chute .................... ........................................................ .....................7-5
Drag Chute Handle .. .............................................................. ...............7-5
Miscellaneous Equipment ................................................................... ....7-6
Monogram Toilet ... ........................................................................... .. .... 7-6
AlamoToilet... ..................................................................................... ....7-6
Learjet 31A
Pilot's Manual
066VM0
DOORS, EXITS &
"MISCELLANEOUS EQUIPMENT
CABIN ENTRY DOOR
The cabin door consists of an upper portion that forms a canopy
when open and a lower portion with integral steps. The upper portion
has two torsion bars to provide opening assistance. The bars,
when over centered, retain the door in the open position . The lower
portion of the door incorporates a torsion bar system to provide closing
assistance. The 36-inch wide door has cables attached to takeup
reels installed on the forward and aft lower door structure to aid in
closing and prevent damage if the door is inadvertently allowed to
drop open. On aircraft 31-075 and subsequent, equipped with the 36-inch
wide door, a snubber has been added to the forward side of the door.
The 24-inch wide door has a snubber on the forward end and a cable
on the aft end of the door. A28 VDC actuator in the lower door actuates
two hooks (one hook for 24-inch door) that pull the upper and
lower doors together against the door frame seal. Each door half has a
locking handle which, when rotated, drives a series of locking pins
into the fuselage structure, and through interlocking arms, secures the
halves together. When the pins are engaged, the door becomes a rigid
structural member. Correct pin engagement may be checked using
the small sight windows at each pin location on the upper door, and
two small doors on the lower door. There is a secondary safety catch
installation on the lower door separate from the door locking system .
This installation will hold the lower door against the door frame seal,
and align the locking pins with the pin holes. When the lower door is
unlocked, the safety catch, located on the aft side of the door, will
keep the door from falling open A key lock is provided on the lower
door to secure the aircraft from the outside. Rotating the key lock will
operate the door hook actuator and the hooks will engage the upper
door to prevent it from being opened .
DOOR WARNING UGHT
A red DOOR warning light is installed on the glareshield annunciator
panel to provide the crew with visual indication of cabin door security.
The light will illuminate to indicate that one or more of the cabin
entry door locking pins is not fully engaged, or the cabin entry door
actuator hooks are still engaged. If all pins are fully engaged and the
door hooks have been fully released, the most probable cause for illumination
is a switch malfunction or misalignment .
PM-121
7-1
Change 2
Pilot's Manual
Learjet 31A
CABIN DOOR OPERATION
To open cabin door from the outside:
1.
Release door locking hooks by rotating key. The keylock will
energize the actuator to release the door hooks.
2.
Lift handle and rotate clockwise to release upper door locking
pins.
3.
Raise upper door.
4.
Reach inside and rotate lower door locking handle to OPEN
position.
5.
Release safety catch and gently lower door to full open position.
To dose cabin door from the inside :
1.
Raise lower door, using cable knob, until the safety catch engages-
2.
Rotate lower door locking handle to the locked position.
3.
With upper door locking handle in the OPEN position, close
upper door.
.
4. Engage door hooks by operating actuator switch on lower
door. This pulls the door halves against the door seals.
5.
Rotate upper door locking handle to the locked position.
6.
Release door hooks by operating actuator switch on lower
door.
To open cabin door from the inside:
1.
Lift upper door locking handle to the open position.
2.
Push the upper door to the full open position .
3.
Rotate lower door locking handle to the OPEN position .
4.
Pull the cable full up by using the cable knob.
5.
Release the safety catch.
　
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