TM 55-1510-221-CL
PRIMARY GOVERNORS
1.
Power levers - Set 1800 RPM.
2.
Propeller levers - Move aft to detent. Check that propeller RPM drops to 1600 to 1640 RPM.
3.
Propeller levers - HIGH RPM.
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 DE-ICE 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 de-ice switch - SINGLE CYCLE AUTO. Check for a drop in pneumatic pressure and wing de-ice boot
inflation and after 6 seconds for a second drop in pneumatic pressure.
4.
Surface de-ice switch - MANUAL. Check that surface boots inflate, and remain inflated, then OFF.
5.
Antenna de-ice switch - SINGLE. Check for a drop in pneumatic pressure and antenna de-ice boot inflation.
6.
Antenna de-ice switch - MANUAL. Check that boots inflate, and remain inflated, then OFF.
C2 P-9
