TM 1-1510-233-CL
P-26
ANTI-ICE AND DEICE SYSTEMS
1.
WINDSHIELD anti-ice switches (2) – NOR-
MAL then HIGH. Check PILOT and COPILOT
(individually) for loadmeter rise, then OFF.
2.
AUTO PROP anti-ice switch – ON (momen-
tarily). Check for PROP AMP meter shows in-
dication and the overhead DC % LOAD meter
shows a rise.
3.
MANUAL PROP anti-ice switch – ON (mo-
mentarily). Check for loadmeter rise.
4.
SURFACE deice switch – SINGLE CYCLE
AUTO. Check for drop in pneumatic pressure
and wing deice boot inflation, and after 6 sec-
onds for a second drop in pressure.
5.
SURFACE deice switch – MANUAL. Check
that surface boots inflate and remain inflated
while switch is held in MANUAL. Release
switch and check that the boots deflate.
6.
ANTENNA deice switch – SINGLE CYCLE
AUTO. Check for a drop in pneumatic pressure
and antenna deice boot inflation.
7.
ANTENNA deice switch – MANUAL. Check
that boots inflated, and remain inflated, then
OFF.
8.
RADOME anti-ice switch – ON. Check for
loadmeter rise and pneumatic pressure drop,
then off.
PNEUMATICS/VACUUM/PRESSURIZATION
1.
PNEUMATIC PRESSURE gage/GYRO SUC-
TION gage – Check in green arcs.
2.
CABIN ALT controller – Set a minimum of 500
feet lower than field pressure altitude.
