TM 55-1510-222-10
4.
Descend immediately. If unable to descend:
5.
Oxygen masks On and 100%.
6.
Cabin pressure switch DUMP.
7.
Bleed air valve switches ON, if cabin
heating is required.
9-22. LOSS OF PRESSURIZATION (ABOVE 10,000
FEET).
If cabin pressurization is lost when operating above
10,000 feet or the ALTITUDE warning annunciator
illuminates, perform the following:
1.
Crew oxygen masks On and 100%.
2.
Descend as required.
9-23. CABIN DOOR CAUTION ANNUNCIATOR
ILLUMINATED.
Remain clear of cabin door and perform the following:
1.
Bleed air valve switches PNEU ONLY.
2.
Descend below 14,000 feet as soon as
practicable.
3.
Oxygen As required.
9-24. PROPELLER FAILURE (OVER 1802 RPM).
If an overspeed condition occurs that cannot be
controlled with the propeller lever, or by reducing power,
perform the following:.
1.
Power lever (affected engine) IDLE.
2.
Propeller lever FEATHER.
3.
Condition lever As required.
4.
Engine cleanup As required.
9-25. FIRE.
a.
Engine Fire. The following procedures shall
be taken in the event of engine fire.
(1) Engine/Nacelle Fire During Start or Ground
Operations. If engine/nacelle fire is identified during
start or ground operation, perform the following:
1.
Condition levers FUEL CUTOFF.
2.
Propeller levers FEATHER.
3.
Fire pull handle Pull.
CAUTION
If fire extinguisher has been used to
extinguish an engine fire, do not
attempt to restart, until maintenance
personnel have inspected the aircraft
and released it for flight.
4.
Push to extinguish switch Push.
5.
Master switch OFF.
(2) Engine Fire In Flight (fire pull handle light
illuminated). If an engine fire is suspected in flight,
perform the following:
1.
Power lever IDLE.
2.
If fire pull handle light is extinguished:
Advance power.
3.
If fire pull handle light is still illuminated:
Engine fire in flight procedures (identified) Perform.
(3) Engine Fire In Flight (Identified). If an engine
fire occurs in flight, perform the following:
CAUTION
Due to the possibilities of fire
warning
malfunctions,
the
fire
should be visually identified before
the engine is secured and the
extinguisher actuated.
1.
Power lever IDLE.
2.
Propeller lever FEATHER.
3.
Condition lever FUEL CUTOFF.
4.
Fire pull handle Pull.
5.
Fire extinguisher Actuate as required.
6.
Engine cleanup Perform.
b. Fuselage Fire. If a fuselage fire occurs,
perform the following:
1.
Fight the fire.
2.
Land as soon as possible if fire continues.
c.
Wing Fire. There is; little that can be done
to control a wing fire except to shut off fuel and
electrical systems that may be contributing to the fire, or
9-8
