Beechcraft C-12C Operator And Technical Reference Manual page 105

d. Cargo Configuration. The cabin area can
be quickly converted for combination passenger/cargo
or all cargo use by removing the seats and partial
partition. Cargo containers are secured with tiedown
fittings attached to the seat tracks. No cargo loading
or unloading equipment is provided.
Aircraft Loading, provides cargo handling information
and instructions.
e. Ferry Fuel Configuration. The cabin area
may be converted to accommodate ferry missions by
removing the passenger seats and floor panels. The
tank platforms and ferry fuel tanks are secured with
seat rail cargo rings. The fuel tanks are connected to
the provisions already installed in the fuel system.
Chapter 6, Weight/Balance and Loading, provides fuel
loading restrictions.
2-73. CIGARETTE LIGHTERS AND ASH TRAYS.
The pilot and copilot have individual cigarette
lighters and ash trays mounted in escutcheons
outboard of their seats.
protected by a 5-ampere circuit breaker, placarded
CIGAR LIGHTER, on the overhead circuit breaker
panel. In the cabin area, individual ashtrays are
mounted in escutcheons along the cabin sidewall
upholstery adjacent to each seat. No cigarette lighters
are installed in the cabin area.
2-74. ELECTRIC TOILET
a. Description. An electric toilet is installed in
the aft cabin area. A sliding door or privacy curtain
closes between the two aft partitions for privacy. The
door can be locked from the aft side.
aircraft, a relief tube is incorporated in the mounting
assembly for the toilet. The circuit is protected by a
10-ampere circuit breaker located in the power
Section VIII. HEATING, VENTILATION, COOLING, AND
2-77. HEATING.
Bleed air is extracted from both engines and
combined with ambient air through the pressurization
and heating flow control unit in each nacelle.
tempered air is then ducted into the cabin. Refer to
Figure 2-26. On the ground, a solenoid actuated
portion of the flow control unit closes off the ambient
air to provide only warm bleed air to the cabin. The
landing gear safety switch allows the solenoid valve to
open during flight, providing a mixture of bleed air and
ambient air up to an altitude of approximately 19,000
to 20,000 feet where only bleed air is used. If the
Chapter 6,
The cigarette lighters are
C D T1 .
On some
ENVIRONMENTAL CONTROL SYSTEM
distribution panel under the floor ahead of the main
spar.
b. Operation. A switch, placarded PRESS TO
FLUSH, is mounted on the seat assembly for
operation of the toilet. Pressing the switch applies dc
power to the motor, which drives the pump. The pump
applies flushing fluid through a nozzle in the upper rim
and washes the inner surface of the bowl. Waste is
carried to the waste tank mounted below the bowl.
When desired, the removable waste tank may be
removed from the toilet for servicing.
contains servicing instructions.
2-75. CHEMICAL TOILETS
a. Description. A quick-removable side-facing
toilet with seat belt is located in the aft cabin area.
Stub partitions and a privacy curtain are provided. The
chemical toilet contains an inner liner, which holds a
plastic disposable bag. The inner liner and disposable
bag are removed for disposal of waste.
Section XII for servicing instructions.
2-76. SUN VISORS.
When adjusting the sun visors, grasp only
by the top metal attachment to avoid
damage to the fragile plastic shield.
Two sun visors are provided for the pilot and
copilot respectively.
adjustable. When not needed as a sun shield, each
visor may be manually rotated to a position flush with
the top of the cockpit so that it does not obstruct view
through the windows.
mixed bleed air is too warm for cabin comfort, it is
further cooled by routing it through the air-to-air heat
exchanger located in each wing center section. An air
intake of the leading edge of the inboard wing brings
ram air into the heat exchanger to cool the bleed air.
The
After leaving the heat exchanger, the ram air is ducted
overboard through louvers on the underside of the
wing. After the bleed air passes through (or around)
the heat exchangers, it is ducted to a mixing plenum
where it is mixed with cabin re-circulated air. The air is
then ducted to the pilot and copilot outlets, defroster,
and through the main ducting system to the floor
outlets.
TM 1-1510-218-10
Section XII
T2 .
Refer to
CAUTION
Each visor is manually
2-89