DriftDown

Question 1

What is the purpose of the driftdown profile following an engine failure?

Answer 1

To keep the airplane altitude as high as possible during descent.

Question 2

What does Method 1 of driftdown flight planning require?

Answer 2

Clear obstacles along the filed routing by 1,000 ft.

Question 3

What does Method 2 of driftdown flight planning require?

Answer 3

Clear enroute obstacles by 2,000 ft to the nearest suitable airport.

Question 4

In Method 2, what may the nearest suitable airport be?

Answer 4

Departure, destination, or a driftdown alternate.

Question 5

What does release planning for driftdown alternates require in Method 2?

Answer 5

Proceed to the alternate at a point abeam along the filed routing.

Question 6

DRIFTDOWN PROCEDURE

Answer 6

• Set maximum continuous thrust
• Refer to the speed cards for driftdown performance speed (When unable to hold altitude, decelerate to VENR)
• Use ice protection equipment only when necessary
• Proceed to the nearest suitable airport for landing. When unsure of terrain clearance, divert to the driftdown airport listed on the flight release using Method 1 or 2 procedures as appropriate.
• Refer to the AeroData Performance Handbook for additional information.