Oral Study Guide Overhead Panel Flashcards
Where does the DC service switch get power from?
AC battery direct bus
Why do we not leave the airplane in the service configuration using the DC service switch?
Drains APU battery
With the battery master (DC power) on (no AC power established) which screens come online? What is the limitation?
5 mins because fans are AC powered
What does the AVAIL illumination on the AC switchlight indicate?
External power available: correct voltage, frequency, phase
What does the FAULT illumination on the IDG switchlight indicate?
High oil temp, low oil pressure
What does the DISC illumination on the IDG switchlight indicate?
IDG is disconnected
How can an IDG be disconnected?
Manually: press DISC switchlight
Automatically: if solenoid is melted or shaft is sheared, no indication on EICAS but FAULT would be illuminated on switchlight