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6.
Gently lower the lower door to the full down position using
the cable knob.
To close and lock cabin door from the outside:
1.
Raise lower door until the safety catch engages.
2. Reach inside and rotate lower door locking handle to the
CLOSED position.
3.
With upper door locking handle in the open position, close
upper door.
4.
Insert key in key lock and rotate. This will operate the actuator
to engage the door hooks and lock the door.
5.
Rotate upper door locking handle to the locked position .
7-2 PM-121
Change 2
Learjet 31A
Pilot's Manual
DOOR HOOK ACTUATOR SWRCH
A door hook actuator switch is located on the upper step of the lower
door. This switch actuates the door hooks that are incorporated to
pull the upper and lower door halves tight against the door frame
seal. This must be accomplished before rotating the upper door locking
handle to secure the door. The hooks must be released before
flight to assure rapid egress through the upper cabin door during an
emergency. The DOOR warning light is illuminated whenever the
hooks are engaged. Power for the door hook actuator is 28 VDC supplied
through the hot-wired 5-amp DOOR MOTOR circuit breaker on
the copilot's circuit breaker panel.
MANUAL DOOR HOOK RELEASE
Should a malfunction prevent the door hooks from releasing, the
hooks can be released from the inside with a ratchet and socket
stowed in the cabinet behind the pilot's or copilot's seat. To manually
release the door hooks:
1.
Peel back carpet on the aft lower doorstep and snap out access
cover.
2.
Slip ratchet and socket over hex shaft and rotate shaft until
hooks are released.
EMERGENCY EXITS
The cabin window adjacent to the wing leading edge on the right
hand side of the cabin serves as an emergency escape exit. This window
is equipped with internal and external release handles. To release
the window from the inside, grasp and pull up on the red handle
marked EXITPULL-LIFT, then pull the window into the cabin. To
open from the outside, depress the button marked PUSH, rotate the
handle down, then push the window into the cabin. The upper portion
of the cabin door is also utilized for emergency egress.
PM-121
7-3
Original
Pilot's Manual
Learjet 31A
EXTERNAL DOORS
External doors are installed to provide maintenance and servicing access.
The nose area forward of the cockpit is accessible through left and
right hand nose cowl doors. The tailcone is accessible through the tailcone
access door located on the bottom of the aircraft in the tailcone area.
Single-point fueling control panel and filler are accessible through a
door on the fuselage below the right engine. Oxygen system servicing
is provided through an access door located either on the right side of
the nose compartment or the right side of the dorsal inlet depending
upon the location of the oxygen bottle . Engine oil system servicing is
provided through an access door located on the outboard side of each
engine cowl. These doors should be checked for security before flight.
EMERGENCY EQUIPMENT
HAND FIRE EXTINGUISHER
A two-pound (.91-kilogram) Halon 1211(BCF) fire extinguisher is generally
located in a cabinet behind the pilot's or copilot's seat, and is accessible
to crew members and passengers. To operate the extinguisher,
remove it from the quick-release bracket and hold upright by the handgrip.
Slide the safety thumb latch forward and squeeze the lever with
the palm of the hand. An indicator disc will eject from the rear of the
operating head and extinguishant will be released from the nozzle. Releasing
the lever closes a secondary seal, thus retaining part of the
charge to deal with flash-back or re-ignition.
FLOTATION EQUIPMENT
Life vests are provided at each crew and passenger seat station. The life
vests are inflated by pulling the red CO2 release tabs or orally by using
the manual inflation tubes.
HATCHET
An emergency hatchet is either stowed in the cabinet behind the copilot's
seat or under one of the crew seats.
7-4
PM-121
Change 3
Learjet 31A
Pilot's Manual
DRAG CHUTE (OPTIONAL)
The drag chute provides a significant additional safety feature when
operating on other than ideal runway conditions . Proper utilization of
the drag chute on wet or icy runways can reduce stopping distance in
most cases to a length equal to or less than that for dry concrete . Maximum
performance benefit will be achieved in the unlikely event of an
aborted takeoff or a landing with complete hydraulic failure. The greatest
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