Integrated Drive Generator

Question 1

During cruise flight the DRIVE light illuminates.

Which Crew member is responsible for calling for the QRH DRIVE Checklist?

Answer 1

The Captain calls for the QRH DRIVE Checklist.

Question 2

During cruise flight the DRIVE light illuminates.

What could cause the DRIVE light to illuminate?

Answer 2

•IDG failure•
IDG automatic disconnect due to high oil temperature
•IDG disconnected through generator drive DISCONNECT switch
•Engine shutdown

Question 3

During cruise flight the DRIVE light illuminates.

Why does the QRH direct the generator drive DISCONNECT switch to be placed in the Disconnect position?

Answer 3

Disconnection prevents generator drive damage.

Question 4

During cruise flight the DRIVE light illuminates.

How is the transfer bus powered if the respective IDG is disconnected?

Answer 4

If the BUS TRANSER switch is in the AUTO position, the source powering the opposite transfer bus automatically picks up the unpowered transfer bus through the bus tie breaker.

Question 5

During cruise flight the DRIVE light illuminates.

How does load shedding function for single generator operation?

Answer 5

The system is designed to automatically shed electrical load incrementally based on actual load sensing.

Question 6

During cruise flight the DRIVE light illuminates.

What is the implication if the APU will not startin the scenario?

Answer 6

One main AC source is remaining and you should land at the nearest suitable airport.

Question 7

During cruise flight the DRIVE light illuminates.

When is landing in excess of the maximum structural landing weight permitted?

Answer 7

Only in an abnormal or emergency situation where the Captain exercises command (emergency) authority. The declaration of an emergency is not required solely for an overweight landing but the situation that caused the overweight landing may necessitate a declaration.

Question 8

During cruise flight the DRIVE light illuminates.

What flaps setting is recommended for an overweight landing?

Answer 8

Flaps 30

Question 9

During cruise flight the DRIVE light illuminates.

What are the reporting requirements for an overweight landing?

Answer 9

• Notify Station Ops
• Notify Dispatch
• Make a logbook entry
• Complete an IR