TM 1-1510-262-10
2. Descend below 14,000 feet -- As soon as practicable.
3. Oxygen -- Crew Oxygen Mask As required.
9-24. DUCT OVER TEMP CAUTION ANNUNCIATOR ILLUMINATED.
Ensure the cabin loor outlets are open and unobstructed, and then perform the following steps in sequence until the
annunciator is extinguished. Allow approximately 30 seconds after each adjustment for the system temperature
to stabilize. The over temperature condition is considered corrected at any point during the procedure that the
annunciator extinguishes.
! CABIN AIR CONTROL -- IN.
@ CABIN AIR MODE SELECT switch -- AUTO.
# CABIN AIR TEMP CONTROL -- FULL DECREASE.
$ FWD VENT BLOWER switch -- HIGH.
% CABIN AIR MODE switch -- MAN COOL.
^ CABIN AIR MANUAL TEMP switch -- DECREASE (hold).
& LEFT ENVIRO & PNEU BLEED AIR valve switch -- PNEU ONLY.
Light still illuminated after 30 seconds:
* LEFT ENVIRO & PNEU BLEED AIR valve switch -- ON.
( RIGHT ENVIRO & PNEU BLEED AIR valve switch -- PNEU ONLY.
Light still illuminated after 30 seconds:
Zk RIGHT ENVIRO & PNEU BLEED AIR valve switch -- ON.
NOTE
If the DUCT OVER TEMP annunciator has not extinguished after completing the above procedure,
the warning system has malfunctioned.
9-25. FIRE.
a. Engine Fire. The following procedures shall be performed in the event of engine ire.
b. Engine/nacelle ire during start or ground operations. If engine/nacelle ire is identiied during start or
ground operation, perform the following:
1. PROP levers -- FEATHER.
2. CONDITION levers -- FUEL CUTOFF.
3. FIRE PULL handle (illuminated) -- PULL.
If ire extinguisher has been used to extinguish an engine ire, do not attempt to restart, until main-
tenance personnel have inspected the aircraft and released it for light.
4. PUSH TO EXTINGUISH switch -- Push (if required).
5. MASTER SWITCH -- OFF.
c. Engine ire in light (FIRE PULL handle light illuminated). If an engine ire is suspected in light, perform
the following:
1. POWER lever (affected engine) -- IDLE.
@ PROP lever (affected engine) -- FEATHER.
3. CONDITION lever (affected engine) -- FUEL CUT-OFF.
9-11
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