737 Flight Crew Operations Manual
Airplane General, Emergency
Equipment, Doors, Windows -
Systems Description
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
D6-27370-866-EGP 1.40.41
The flight deck number two windows can be opened on the ground or in flight and
can be used for emergency evacuation. To open the window, depress the trigger
and turn the handle back and inboard. After the window moves inboard, move it
back until it locks in the open position.
To close the window, it must first be unlocked. Pull forward on the latch
mechanism rod to unlock the window. Depress the trigger and move the window
forward until the handle can be turned forward and outboard. When the trigger is
released, the window latches.
Only the first officer’s window number two window can be opened from outside
the airplane.
Lower Cargo Compartments
The lower cargo compartments are designed and constructed to satisfy FAA
category Class C compartment requirements. This means the compartments are
designed to completely confine a fire without endangering the safety of the
airplane or its occupants. The compartments are sealed and pressurized but do not
have fresh air circulation and temperature control as do the upper passenger
compartments.
There are two cargo compartment doors on the lower right side of the fuselage.
Both are plug type, inward opening pressure doors, hinged at their upper edges
and operated manually from either inside or outside the airplane. Except for slight
difference in shape, both doors are similar in design and operation. The door is
locked closed by two latches. Each door has a balance mechanism which creates
door–open force slightly more than equal to the weight of the door. The door can
therefore, with little effort, be swung open. The door can be closed easily by
pulling a lanyard attached to the door, grasping the handle and closing the door.
A pressure equalization valve is in the aft bulkhead of each compartment. The
valves let only enough air flow into or out of the cargo compartments to keep the
pressures nearly the same as the cabin pressure.
Blowout panels in the lower cargo compartments provide pressure relief at a
greater rate than the pressure equalization valve in case the airplane pressurization
is lost.
Emergency Escape
Emergency escape information included in this chapter includes:
• emergency evacuation routes
• flight deck windows
• escape slides
• escape straps
• emergency exit doors
September 15, 2016
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