PRESSURIZATION

Question 1

The pressurization can hold a 5,000 ft cabin at the maximum certified altitude of 41,000 ft: T/F?

Answer 1

FALSE (the ans is 8,000 ft cabin @ 41K)

Question 2

What is the maximum pressure differential that the cabin can hold?

Answer 2

8.6 psid

Question 3

What is the function of the cabin altitude limit valves?

Answer 3

Open @ cabin altitude of 13,000 ft =/- 1,500 ft, allowing cabin ambient air to enter the control line(s), reducing the control vacuum, and closing the outflow valves, thus re-establishing cabin pressure.

Question 4

The emergency dump switch requires no DC power to function: T/F?

Answer 4

FALSE

Question 5

The digital pressure controller will set a maximum climb rate of how many foot per minute?

Answer 5

500 fpm (climb) / -600 fpm (descent)

Question 6

On the ground, what will cause the airplane to go into pre-pressurization mode?

Answer 6

Both throttles reach 85% N2

Question 7

Prior to takeoff, what should you set in the digital pressure controller window?

Answer 7

Cruise altitude

Question 8

How do you know if the digital pressure controller goes into isobar mode?

Answer 8

Yellow caution light appears in the top left corner of the controller display face.

Question 9

If the pressurization systems goes into a manual mode, how would you climb and descent the cabin?

Answer 9

Pilot must control cabin pressure altitude by moving the manual toggle switch.

Question 10

How do you test the digital pressure controller prior to flight?

Answer 10

Press & hold EXER button,
Cabin will pressurize at 100 fpm to 200 fpm below field elevation in about 2 minutes,
Releasing the button terminates the exercise,
Pressing the EXER button in flight functions as a lights test.