CABIN PRESS Panel

Question 1

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

Answer 1

Automatic = FMGC (LDG ELEV must be in AUTO)
Semi-automatic = byLDG ELEV selectors
Manual= by selecting the MODE SEL to MAN and then using the MAN V/S CTL toggle switch

Question 2

What does selecting the DITCHING pushbutton ON accomplosh?

Answer 2

-closes the flow valve
-closes the emergency RAM AIR inlet
-closes the Avionics Ventilation Inlet and Extract valves
-Closes pack flow control valves
-Forward cargo isolation outlet valve (if installed)
-Cargo recirculation fans stop automatically (if installed)
-closes all valves below the waterline
-

Question 3

How many controllers are in the pressurization system? Do they share the load?

Answer 3

Two, only one is used at a time and they swap riles after each landing

Question 4

How can apilot manually switch controllers?

Answer 4

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

Question 5

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

Answer 5

Both automatic pressure controllers are faulty

Question 6

What protects the airframe from excessive cabin differential pressure?

Answer 6

Two pressure relief valves.