What does a BAT DISCHARGE light mean?
A BAT DISCHARGE light with BAT switch ON, excessive battery discharge detected.
What does a TR UNIT light mean?
On ground: Any TR has failed
In-flight: TR1 failed OR TR2 AND TR3 failed
What does a ELEC light mean? Can you get it in the air, on the ground, or both?
ELEC light means that a fault exists in DC power system or standby power system. Operates only with aircraft on the ground.
What are the normal AC power indications?
Voltage: 115 +/- 5 volts
Frequency: 400 +/- 10 cycles per second (CPS)
Amps: Vary with actual load