PRIOR TO MAINTENANCE TEST FLIGHT (CONT)
STALL WARN heat switch - Off.
PITOT heat switches (2) - Off.
FUEL VENT heat switches (2) - Off.
Extend the ice vanes during ground operation to
minimize foreign object damage (FOD) to the engine.
ICE VANE CONTROL switches - ON.
Lighting systems - Check. Include position
lights, recognition lights, landing/ taxi light, wing
ice lights, beacons, emergency lights, and
interior lights, then off.
Place the EMERGENCY lights override switch in the
TEST position and check the emergency lights (5)
for illumination and intensity. A dim light indicates
a weak battery pack which may not allow lights to
turn off. At the completion of the check, cycle the
switch from the TEST position to the OFF/RESET
position and then to AUTO.
HYD FLUID SENSOR TEST switch -
Depress. Check HYD FLUID LOW annunciator
light illuminates after approximately 2 seconds,
and extinguishes after approximately 6 seconds.
Engine fire protection system - Check as follows: