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AFT ATTENDANT PANEL
ATTENDANT HANDSET
BCD
AIRCRAFT GENERAL
Sec. 6.1 Page 42 737
Rev. 11/15/02 #41 Continental Flight Manual
LOWER CARGO COMPARTMENTS
The lower cargo compartments are designed and constructed to satisfy United
States Federal Aviation Administration (FAA) category class C compartment
requirements. The cargo compartment classification was changed from D to C
with the installation of the smoke detection and fire suppression system. 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 aircraft. Except for
slight difference in shape, both doors are similar in design and operation. The
door is locked closed by four 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 or no manual effort, be swung open
until it engages a mechanical uplock. The door can be closed easily by pulling a
lanyard attached to the door, releasing the uplatch, grasping the handle and
closing the door.
Note: When the doors are not locked, the MASTER CAUTION light and DOOR
ANNUNCIATOR are illuminated.
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 aircraft should
suddenly lose pressurization.
AIRCRAFT GENERAL
737 Sec. 6.1 Page 43
Flight Manual Continental Rev. 11/15/02 #41
D SLIDING CARPET CARGO LOADING SYSTEM
A sliding carpet cargo loading system is installed on the B737-900 aircraft. The
sliding carpet cargo system installed in the forward and aft cargo bays will allow
one person in the bay to load and unload baggage in a shorter time than
previously experienced.
A “bulkhead” attached to a continuous loop “carpet” moves from the extreme
end of the cargo bay to the loading door on the aircraft. As the baggage fills the
space from the bottom of the bay to the top, the “bulkhead” is moved toward the
back / front of the compartment with the baggage on the carpet. When all
baggage is loaded, a cargo net is installed to hold the cargo in place to prevent
shifting in flight. To unload the bags, the “bulkhead” direction is reversed, and
as the “bulkhead” moves toward the cargo-loading door, the bags are quickly
and efficiently unloaded from the “carpet.”
These loading systems are designed to be operated on the ground only.
Electrical logic is provided to remove power from each system when the
respective cargo door is closed.
Flight deck control over the system is through two circuit breakers located on
the lower P6/11 panel labeled CARGO LOADER CONTROL AFT and CARGO LOADER
CONTROL FWD. To activate the system, 115V AC and 28V DC electrical power
must be available. With the battery switch ON, ground power selected ON, and
the two circuit breakers set, power will be available to the control panels in the
respective cargo bays for use by the ground personnel.
AIRCRAFT GENERAL
Sec. 6.1 Page 44 737
Rev. 11/15/02 #41 Continental Flight Manual
>> @ B C D
c 1068 Cu. Ft. 816 Cu. Ft. 946 Cu. Ft. 1530 Cu. Ft. 1827 Cu. Ft.
d 643 Cu. Ft. 535 Cu. Ft. 580 Cu. Ft. 883 Cu. Ft. 1002 Cu. Ft.
e 33” x 48” 33” x 48” 33” x 48” 33” x 48” 33” x 48”
f 425 Cu. Ft. 281 Cu. Ft. 366 Cu. Ft. 647 Cu. Ft. 825 Cu. Ft.
g 35” x 48” 35” x 48” 35” x 48” 35” x 48” 35” x 48”
LOWER CARGO COMPARTMENTS
AIRCRAFT GENERAL
737 Sec. 6.1 Page 45
Flight Manual Continental Rev. 11/15/02 #41
WATER AND WASTE SYSTEMS – WATER SYSTEM
GENERAL
The potable aircraft water system is supplied from a single tank located behind
the aft cargo compartment. Fresh water is supplied to the galleys and lavatory
sinks. All water is filtered.
QUANTITY INDICATION AND SYSTEM OPERATION
>>@ A quantity indicator is located above the aft service door. When
PUSH BUTTON on the indicator is pressed, lights illuminate to show the water
level. When full, approximately 20 U.S. gallons will be available.
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