What is the normal pneumatic pressure range?
12-20 psi
What are the normal vacuum ranges?
0-15000’ 4.3-5.9 inches mercury
15000-35000’ 2.8-4.3
What operates on the pneumatic system?
Door seal, brake de-ice, pressurization controller and outflow valves, rudder boost, de-ice boots, bleed air warning system
What do the pressurization outflow valves need to operate?
Vacuum
What is the pressure differential required for rudder boost?
60 psi
What is bleed air regulated to for pneumatic system?
18 psi