Cabin Press

Question 1

How is the landing field elevation entered into the pressurization system in automatic, semi-automatic, and manual modes?

Answer 1

Auto: via FMGC with LDG ELEV in AUTO; Semi-auto: using LDG ELEV selector button; Manual: with MODE SEL in MAN and using MAN V/S CTL toggle

Question 2

What does selecting the DITCHING pushbutton ON accomplish?

Answer 2

Closes all openings below the waterline

Question 3

When would a pilot push the DITCHING pushbutton?

Answer 3

When directed by ECAM or during ALL ENG FAIL or Deicing checklist

Question 4

How many controllers are in the pressurization system?

Answer 4

Two — only one is active at a time; they switch roles after each landing

Question 5

How can a pilot manually switch pressurization controllers?

Answer 5

Set MODE SEL to MAN for 10 seconds, then back to AUTO

Question 6

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

Answer 6

Both automatic pressure controllers are faulty

Question 7

What protects the airframe from excessive cabin differential pressure?

Answer 7

Two pressure relief valves