Lighting systems

TM 1-1510-223-MTF

PROCEDURE

TROUBLESHOOTING

REFERENCE

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.

15.

ICE VANE CONTROL switches - ON.

*16.

Lighting systems - Check. Include position

lights, recognition lights, landing/ taxi light, wing

ice lights, beacons, emergency lights, and

interior lights, then off.

NOTE

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.

*17.

HYD FLUID SENSOR TEST switch -

Depress. Check HYD FLUID LOW annunciator

light illuminates after approximately 2 seconds,

and extinguishes after approximately 6 seconds.

*18.

Engine fire protection system - Check as follows:

2-6