Chapter 7 - Environmental Control Systems

Question 1

When is the emergency pressurization activated?

Answer 1

9500-ft cabin altitude

Question 2

When is the auto pressurization control disabled?

Answer 2

8600-ft cabin altitude

Question 3

When do the cabin altitude limiters close?

Answer 3

13, 700-ft cabin altitude

Question 4

When does the cabin altitude warning horn sound?

Answer 4

10, 100-ft cabin altitude

Question 5

What automatically turns the auxiliary cabin heat off?

Answer 5

Turning the cabin air switch ON

Question 6

While on the ground, what automatically removes power from Freon air?

Answer 6

Engaging a starter

Question 7

What happens when the DUCT OVHT annunciator illuminates?

Answer 7

Temperature control valve closes

Question 8

What is the maximum cabin differential pressure?

Answer 8

9.8 psi

Question 9

What does pushing the EMER DEPRESS switch do?

Answer 9

Causes both overflow valves to open until the cabin altitude reaches 13, 700 ft

Question 10

What differences occur during a takeoff or landing above 8000 ft?

Answer 10

Pressurization warning and safety features to reschedule to 13, 700-ft cabin altitude