OTHER LIMITATION QUESTIONS

Question 1

Why does low pressure air must be off prior to the main cabin door being closed.

Answer 1

The aircraft could become pressurized on the ground, and if someone tries to open the door when low pressure air is supplied the door could open with explosive force

Question 2

Why do PACKS need to be off when low pressure ground air is supplied

Answer 2

Because the recur fan could be damaged even with it being off

Question 3

Minimum temperature for cold-soaked APU starting on the ground

Answer 3

-40°C

Question 4

Starter assisted man engine start (MES) using APU bleed is limited to?

Answer 4

21,000 ft

This is not APU limitation, it’s in flight main engine start altitude limitation.

Question 5

Normal takeoff power and maximum power (2 engine) is limited to how many minutes?

Answer 5

5 minutes

Question 6

APR power (1 engine) is limited to how many minutes?

Answer 6

10 minutes