Cirrus SR22 Pilot's Operating Handbook And Flight Manual page 368

Section 9
Supplements
AUTO DESCENT Warning
No pilot response to the HYPOXIA ALERT annunciation detected after
one minute. Warning remains until pilot responds. Automatic descent
begins after one minute of unanswered Warning. Once it begins
automatic descent will commence to 14,000 for 4 minutes, then to
12,500' thereafter. Once descent begins, only a decouple of the
Autopilot will interrupt this process.
1. If within 60 seconds of AUTO DESCENT Warning (prior to
descent):
a. Actuate Integrated Avionics System softkey or knob to reset.
2. If greater than 60 seconds of AUTO DESCENT Warning:
a. Autopilot............................................................ DISCONNECT
b. Situation..................................................................... ASSESS
Pilot should carefully asses aircraft state, altitude, location,
and physiological fitness to maintain continued safe flight.
c. ATC.............................................COMMUNICATE SITUATION
d. ALT Bug ....................................................... RESET to desired
e. Autopilot.....................................................................ENGAGE
If hypoxia suspect:
f. Oxygen Masks or Cannulas ............................................. DON
g. Oxygen System .................................................................. ON
h. Oxygen Flow Rate .................................................. MAXIMUM
i. Blood Oxygen Saturation Level ................................... CHECK
10 of 30
AUTO DESCENT
• WARNING •
Cirrus Design
SR22 / SR22T
P/N 13772-135
Revision 03: 12-14-10