User manual

Page 84
Aircraft Operation Manual
Piper Cheyenne I, IA, II, IIXL
For ight simulation use only
NOTE
A residual pressure of approximately .25 PSI will show on the
differential pressure gauge at any time pressurization is select-
ed and the aircraft is operating lower than the cabin altitude
selected.
Do not land when aircraft is pressurized above .3 PSI
A warning light on the annunciator display warns the pilot should the cabin alti-
tude go above 10.500 feet (Garret: 11.500 feet to 12.000 feet) or should the cabin
differential pressure go above 5.7 psi. Cabin pressure is automatically regulated
to a maximum of 5.5 psi. Should the automatic regulator malfunction, a system
of safety devices releases pressure.