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4–2. LOCATION AND DESCRIPTION OF MAJOR COMPONENTS (cont) | Up
TM-1-1520-238-T-4 Army Model AH-64 Helicopter (NSN
1520-01-106-9519) (EIC: RHA) Manual | Next
(2) Engine Anti–Ice Subsystem |
TM 1-1520-238-T-4
4–4
4–2.
LOCATION AND DESCRIPTION OF MAJOR COMPONENTS (cont)
4–2
(d) Cooling Doors.
The cooling doors are movable vane type doors that open when the engines are
shutdown. They are located at the bottom on both the right and left hand nacelles.
(e) Cooling Door Actuator.
The cooling door actuator, a pneumatic piston with an internal spring,
opens and closes the cooling door.
(f) Fixed Louvers.
The fixed louvers are fixed air scoops that are angled forward with a honeycomb
filter in the vents.
NGB FAIRING
(HEATER BLANKET IN FAIRING)
BLEED AIR TUBE
ANTI-ICE VALVE
SWITCH
THERMOSTATIC
BLEED AIR TUBE
M58-069
Figure 4–3.
Engine Anti–Ice Subsystem
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