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Section 9 Cirrus Design
Supplements SR22
Section 3 - Emergency Procedures
Inadvertent Icing Encounter
• WARNING •
The Ice Protection System may not remove significant
accumulations of ice if accretions are permitted to form with
the Ice Protection System off. Ensure system start time and
system mode is noted while exiting icing conditions to aid in
estimating de-icing fluid reserve.
Flight into known icing conditions is prohibited. However, if icing is
inadvertently encountered determine the most appropriate operating
mode:
NORMAL mode is selected when icing conditions are encountered
and prior to ice accretion. The maximum system operating time while
in NORMAL mode is approximately;
Serials before G3 Wing, 60 minutes.
Serials with G3 Wing, 80 minutes.
MAXIMUM mode is selected if ice has accreted to flight surfaces. The
maximum system operating time while in MAXIMUM mode is
approximately;
Serials before G3 Wing, 30 minutes.
Serials with G3 Wing, 40 minutes.
1. Ice Protection Switch ................................................... As required
2. Pitot Heat .................................................................................. ON
3. Airspeed................................................................... 100-139 KIAS
4. Time ................................................................................... NOTED
5. Exit icing conditions. Turn back and/or change altitude.
6. Cabin Heat.................................................................... MAXIMUM
7. Windshield Defrost......................................................FULL OPEN
8. Alternate Induction Air............................................................... ON
9. When Icing Conditions Cleared, Ice Protection System...........OFF
10. Airspeed................................................ As flight conditions dictate
Revision 07: 05-13-08
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