TM 55-1510-220-CL
ICE VANES
1.
Ice vane switches - EXTEND Verify torque drop, TGT
increase, and #1 ICE VANE EXTEND and #2 ICE VANE
EXTEND annunciators illuminate.
2.
Ice vane switches - RETRACT Verify return to original
torque and TGT, and that #1 ICE VANE EXTEND and
#2 ICE VANE EXTEND annunciators extinguish.
ANTI-ICE AND DEICE SYSTEMS
1.
Windshield anti-ice switches - NORMAL and HI Check
PILOT and COPILOT (individually) for loadmeter rise,
then OFF.
2.
Propeller switches - INNER and OUTER (momentarily)
Check for loadmeter rise.
3.
Surface deice switch - SINGLE CYCLE AUTO. Check
for a drop in pneumatic pressure and wing deice boot
inflation and after 6 seconds for a second drop in
pneumatic pressure.
4.
Surface deice switch - MANUAL Check that surface
boots inflate, and remain inflated, then OFF.
5.
Antenna deice switch - SINGLE Check for a drop in
pneumatic pressure and antenna deice boot inflation.
6.
Antenna deice switch - MANUAL Check that boots
inflate, and remain inflated, then OFF
P-9
