Pressurization

Question 1

What is the High Pressure bleed air used for?

Answer 1

It’s used for deice and is 36 PSI, +/- 3 PSI

Question 2

What is intermediate pressure air used for?

Answer 2

Environmental control, 50 PSI +/- 3 PSI

Question 3

Does the high pressure and low pressure air mix?

Answer 3

No, they are both completely independent systems.

Question 4

What is the brains of the pressurization system?

Answer 4

IASC, integrated, air system control

Question 5

What happens when you press the Emergency Depress switch in auto mode?

Answer 5

Raises the cabin to 14,000 ft +/- 100 ft at a rate of 2,500 ft per minute

Question 6

What happens when you press the Emergency Depress switch in manual mode?

Answer 6

Raises the cabin to 14,500 +/- 500 ft at a rate of 3,000 ft per minute

Question 7

When will the Ditching switch work?

Answer 7

Only in auto mode below 15,000 ft

Question 8

What does the Ditching switch do?

Answer 8

Shuts off the air conditioning and keeps the outflow valves closed in case of a water landing

Question 9

When is the Ditching sequence inhibited?

Answer 9

Above 15,000 ft

Question 10

What does the manual temp mode vary from?

Answer 10

3 degrees to 70 degrees

Question 11

When is Ram Air available?

Answer 11

It is only available below 10,000 feet