- used to indicate cabin pressure in terms of cabin pressure altitude versus aircraft altitude.
@ 20,000 IT will indicate cabin pressure in terms of a cabin altitude of 8,000 feet.
Atmospheric Pressure at 20,000 feet is 6.76 PSI.
Cabin Pressure is 10.91 PSI @ 8,000
- the indicator provides cabin pressure altitude indications from 0 to 50,000 feet.
Cabin Pressure Altitude Indicator