Study Guide-Cabin Press Panel

Question 1

What does the DITCHING pb do?

Answer 1

Closes all valves below the waterline.
-C- Cargo Compartment Isolation Valve.
-A- Avionics ventilation (inlet/extract valves)
-R- Ram air inlet.
-P- Pack FCVs.
-O- Outflow valve (if in AUTO).

Question 2

Can the pilot control the outflow valve?

Answer 2

YES, select MAN on the MODE SEL and use the MAN V/S CTL switch.

Question 3

How many auto pressure controllers?

Answer 3

2: only one is used at a time and they swap roles after each landing.

Question 4

How do you manually switch controllers?

Answer 4

Switch MODE SEL to MAN for 10 sec., then back to AUTO.

Question 5

What does an amber FAULT light in the MODE SEL pb indicate?

Answer 5

Both automatic pressure controllers are faulty.

Question 6

The LDG ELEV selector in the AUTO position does what?

Answer 6

The pressurization system uses the FMGS data to construct an optimized pressurization schedule.

Question 7

Where does the pressurization system obtain the landing elevation from?

Answer 7

The FMGS database.

Question 8

When OUT of the AUTO position, what is different?

Answer 8

The pressurization system uses the manually selected landing elevation.