TM 1-1510-224-CL
2.
Exercise propeller - Move aft to detent, check propeller
RPM 1150 ±50, then return to high RPM.
ANTI-ICE AND DEICE SYSTEMS
1.
WINDSHIELD anti-ice switches (2) - NORMAL then
HIGH. Check PILOT and COPILOT (individually) for
loadmeter rise, then OFF.
2.
AUTO PROP deice switch - ON (momentarily). .Check
for loadmeter rise.
3.
MANUAL PROP deice switch - ON (momentarily).
Check for loadmeter rise, then off.
4.
SURFACE deice switch - SINGLE CYCLE AUTO.
Check for drop in pneumatic pressure and wing deice
boot inflation, and after 6 seconds for a second drop in
pneumatic pressure.
5.
SURFACE deice switch - MANUAL. Check that surface
boots inflate, and remain inflated, then off.
6.
ANTENNA deice switch - SINGLE CYCLE AUTO.
Check for drop in pneumatic pressure and that antenna
deice boots inflate.
7.
ANTENNA deice switch - MANUAL. Check that boots
inflate, 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 SUCTION gage
- Check in green arcs.
2.
CABIN ALT controller - Set 500 feet lower than field
pressure altitude.
3.
Cabin pressurization RATE control - Set to maximum.
4.
ENVIRO & PNEU BLEED AIR valve switches (2) -
ENVIRO & PNEU off.
5.
PNEUMATIC PRESSURE gage/GYRO SUCTION gage
- Check. Pressure should drop to zero.
6.
BL AIR OFF annunciators (2) - Check illuminated.
7.
BL AIR FAIL annunciators (2) - Check illuminated.
8.
CABIN PRESS switch - TEST (hold).
9.
LEFT PNEU & ENVIRO BLEED AIR valve switch - ON.
P-16
