曝光台 注意防骗
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armed.
Selection and discharge of either fire bottle is accomplished
by placing the AGENT DISCH switch to BTL 1 or
BTL 2. After depletion of the charge in the initially selected
bottle, the remaining bottle can be discharged to
the same engine compartment by selecting the opposite
position on the AGENT DISCH switch. The other FIRE
PULL handle performs the same function for its respective
engine compartment.
2-2-4. AGENT DISCH Switch
A three-position AGENT DISCH (discharge) switch is
above the FIRE PULL handles on the center instrument
panel (fig. 2-2-1). The lever-lock momentary switch positions
are BTL 1, neutral, and BTL 2. When BTL 1 is
selected, the agent is discharged from the No. 1 bottle
into the selected engine compartment. When BTL 2 is
selected, the agent is discharged from the No. 2 bottle
into the selected engine compartment. Only two fire extinguisher
agent bottles are provided. If the agent from
both bottles is used in combating a fire in one engine
compartment, agent will not be available should a fire
occur in the other engine compartment. Power is supplied
from the corresponding No. 1 or No. 2 DC essential
bus through the ENGINE NO. 1 and NO. 2 FIRE EXT
circuit breakers on the No. 1 and No. 2 PDP.
2-2-5. FIRE DETR Switch.
A two-position FIRE DETR (detector) switch is below the
AGENT DISCH switch on the top center section of the
center instrument panel (fig. 2-2-1). It is labeled FIRE
DETR and TEST. The toggle switch is spring-loaded to
FIRE DETR which monitors the engine fire detection
system. When the switch is placed to TEST, it checks the
operation of the engine fire detection system by closing
relays in both controls units and the warning lights in both
FIRE PULL handles illuminate. Power to operate the test
circuit is supplied by the DC essential bus through the
LIGHTING CAUTION PNL circuit breaker on the No. 1
PDP.
2-2-6. Hand Fire Extinguishers.
WARNING
Avoid prolonged exposure (5 minutes or
more) to high concentrations of fire extinguishing
agent and its decomposition
products because of irritation to the eyes
and nose. Adequate respiratory and eye
relief from excessive exposure should be
sought as soon as the primary fire emergency
permits. Use of oxygen for personnel
is recommended.
Three portable 6.3 pound capacity hand fire extinguishers
are provided in the helicopter. One is in the cockpit,
on the floor to the right of the pilot’s seat. Two hand fire
extinguishers are in the cabin section. One on the forward
bulkhead and one in the left rear, just forward of the
ramp.
2-2-7. Emergency Troop Alarm and Jump Lights.
Two emergency troop alarm and jump light boxes are in
the cargo compartment. The forward box is on the bulkhead
and above the avionics equipment shelves and the
aft box is on the left side of the fuselage above the ramp
at sta. 575. Each box has an electric bell in the center with
a red light fixture on one side and a green light fixture on
the other side. The TROOP WARN panel on the overhead
switch console is used to operate the emergency
troop alarm and jump lights.
The emergency troop alarm and jump lights have several
functions. They can be used to notify passengers and
crew with predetermined signals in time of emergency.
The jump lights can be used to notify flight engineer
during airborne delivery operations and to alert the troop
commander during paratroop drop missions. Refer to
Chapter 9 for standard use of the troop alarm.
TM 1-1520-240-10
2-2-4
2-2-8. TROOP WARN Panel
The TROOP WARN (warning) panel is located on the
overhead switch panel (fig. 2-2-2). It has two troop jump
lights labeled RED and GREEN. Also, two switches labeled
JUMP LT and ALARM. Power to operate and control
the emergency troop alarm and jump lights is supplied
by the DC essential bus through the TROOP
ALARM BELL and TROOP ALARM JUMP LT circuit
breakers on the No. 2 PDP.
a. Troop jump lights. The troop jump lights provides
the pilots a visual indication of the troop jump light selected.
One light is provided for each color selection and
comes on when the respective light is selected. The
brightness of the lights is controlled by the PLT INST
rotary control switch on the PLT LTG panel of the overhead
switch panel.
b. JUMP LT switch. The three-position JUMP LT
switch is labeled GREEN, OFF, and RED. When the
switch is set to GREEN, the green lights on the emergency
troop and jump light box, at both stations, and the
troop jump lights on the overhead switch panel come on.
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