TM 55-1510-215-10
seats and two aft-facing chair seats attached to floor
2-66. Sun Visors.
railings on each side of the center aisle.
CAUTION
d. Cargo Transport. Troop seat unit can be folded
up to prevent conflict with the cargo mission, or may be
When adjusting the sun visors, grasp
remove, if required.
only by the top metal attachment to
avoid damage to the plastic shield.
2-63. Cigarette Lighters and Ash Trays.
One electrical push-in type cigarette lighter is
Two sun visors are provided for the pilot and copilot
located on the pilot's control pedestal (fig. 2-6). A push-
respectively (fig.
Each visor is manually
pull type ash tray is built into the inboard arm rest of the
adjustable. When not needed as a sun shield, each
pilots and copilot's seats and is also included on the
visor may be manually rotated to a position flush with the
back side of each staff personnel chair. One push-pull
top of the cockpit so that it does not obstruct view
type ash tray is installed on the fuselage wall adjacent to
through the windows.
each of the four passenger seats in the cabin. The
circuit is protected by a 5-ampere circuit breaker,
2-66A. Battery Vent Anti-Icing.
placarded CIGARETTE LIGHTER, on the right subpanel
a. Description.
The battery box ram air vent,
located on the top of the right wing center section,
2-64. Relief Tubes.
utilizes anti-icing protection provided by an externally
attached spirally-wound electrical element. Power is
Two relief tubes are provided, one under the pilot's
supplied to the element by the 7.5 amp circuit breaker
seat and the other located aft of the main entrance door
switch placarded HEAT--FUEL VENTS-RIGHT located
in the aft cabin.
on the pilot's subpanel (fig. 2-7).
2-65. Rear View Mirror.
CAUTION
A single rear-view type mirror is externally mounted
below the pilot's side window to enable surveillance
To prevent overheat damage to the
along the left fuselage and aft tail surfaces (fig. 2-5).
electrically heated anti-ice jackets,
Sighting angle of the mirror is adjustable from within the
the HEAT-FUEL VENTS-RIGHT switch
cockpit using a rotary control knob located aft of the fuel
should not be turned ON unless
management panel (fig. 2-5). When not in use, the
cooling air will soon pass over the
mirror may be adjusted to streamline against the
jackets.
fuselage exterior for minimum drag.
b. Normal Operation. For normal operation the
HEAT - FUEL VENTS-RIGHT switch is turned OFF
during BEFORE STARTING ENGINES procedure, and
turned ON as required the BEFORE TAKEOFF
procedure. Refer to Chapter 8.
Section VIII. HEATING, VENTILATION, COOLING, AND ENVIRONMENTAL, CONTROL UNIT
2-67. Heating and Ventilation Systems.
air is heated, it is ducted to three warm air outlets in the
cabin, and to the two warm air and defroster outlets in
the cockpit. The cockpit's warm air outlets are located at
operates utilizing fresh air from outside of the aircraft.
floor level. Stale air is vented through the exhaust air
On the ground, the outside air enters the system cold air
plenum installed in the cabin ceiling.
plenum through the ventilation louvers in the left door of
the nose avionics compartment. Two ventilation air
(1) Vent blower and switch.
A switch,
blowers operate only while the aircraft is on the ground,
placarded VENT BLWR on the right subpanel, controls
activation of the blowers for the ventilation system (fig.
forcing air from the nose avionics compartment into the
cold air plenum. When the aircraft becomes airborne, a
blowers for cooling air when the aircraft is on the ground.
switch on the left main landing gear strut turns the
When the aircraft becomes airborne, a switch on the left
blowers off. Part of the ram air bypasses the hearer and
main gear turns the ventilation blower circuits off.
is ducted to the nose avionics compartment, and to the
Circuits are protected by a 35-ampere circuit breaker
cold air outlets in both the cockpit and cabin. The
placarded VENT BLOWER located on the copilot's
remainder of the air is ducted into the heater. After the
circuit breaker panel (fig. 2-18).
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