EMERGENCY DESCENT

Question 1

With engine at IDLE, high speed and speed brakes extended, what is the approximate rate of descent? Time and distance from FL390 to FL100?

Answer 1

• 7000 ft/min
• 4 minutes
• 40 NM

Question 2

What is the MORA displayed in the ND?

Answer 2

The highest MORA value within a radius of 40 NM around the aircraft.

Question 3

When should you suspect structural damage?

Answer 3

• Loud bang
• High cabin vertical speed

Question 4

If you suspect structural damage, what should you do?

Answer 4

• Set SPEED/MACH pb to SPEED
• Carefully use the speed brakes

Question 5

What has priority? Emergency descent or Collision Avoidance?

Answer 5

• Collision Avoidance has priority, even if it required a temporary interruption of the descent manoeuvre.

Question 6

What are your actions after an emergency descent is completed?

Answer 6

• Close the oxygen mask stowage compartment
• Press the PRESS TO RESET oxygen control slide, to deactivate the mask microphone, and to cut off oxygen

Question 7

To which rate should you limit the descent below FL 100?

Answer 7

1000 ft/min, except during the approach phase.