Copyright D.P. Browne 2011

 

 

 

 

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SD : Cabin Pressure page

 

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Bleed
Elex AC

Delta pressure between cabin and the outside

 

 

Cabin pressure rate of climb. For passenger comfort this ought to be within +/- 400 ft/min

 

 

Cabin altitude. Warnings are generated above 10,000 ft and the cabin oxygen system will cause the cabin oxygen masks to drop down.

 

 

Cabin Pressure Control system active

 

 

The position and status of the two cabin extraction valves are displayed at the bottom. When on the ground the valves are fully open. In flight they are slightly open, their position, being used to regulate the extraction of bleed air from the cabin, and thus controlling the cabin pressure.

 

 

The pack status is shown by a system triangle. It is white if the Pack is not on, else it is green.