System Review PTM CH-12 (Pressurization)

Question 1

The Electric Cabin Pressure Control System modulates the single outflow valve mounted where?

Answer 1

Aft pressure bulkhead.

Question 2

The Outflow Valve has a single butterfly valve controlled by ___ independent channels and motors, one for normal and manual pressurization mode.

Answer 2

2

Question 3

The cabin altitude limiting feature overrides all other inputs to maintain what maximum cabin altitude?

Answer 3

14,200 feet.

Question 4

Normal cabin pressurization differential is?

Answer 4

9.6 psid

Question 5

The Mechanical Pressure Relief Valve activates when?

Answer 5

A differential pressure of 10.2psid.

Question 6

NORMAL selection on the Cabin Pressure page automatically sets the landing field elevation? T/F

Answer 6

True.

Question 7

How is cabin pressurization controlled with a controller failure?

Answer 7

By selecting MANUAL on the AUTO/MANUAL Button and using the CABIN ALT toggle (cherry picker).

Question 8

Activating the CABIN ALT toggle switch UP or DN for more than 6 seconds causes what?

Answer 8

An excessive increase in the rate of cabin change.

Question 9

The CABIN DUMP button dumps the cabin to what altitude in AUTO mode?

Answer 9

13,700 feet

Question 10

The electric outflow valve limits cabin to what cabin altitude?

Answer 10

14,200 feet

Question 11

Where is the Cabin Altitude, Rate of Climb or Descent, and Diff Pressure found?

Answer 11

The EIS Display, CABIN ALT window.

Question 12

The Cabin Door PRESSURE WARNING red LED on the inner and outer door panel illuminates when?

Answer 12

Aircraft is pressurized and on the ground.