Hot Weather Operation; Extended Ground Operation; Revision 1 - Cirrus SR22 Pilot Operating Handbook

Cirrus Design
SR22

Hot Weather Operation

Avoid prolonged engine operation on the ground. Fuel BOOST must
be ON for engine start and takeoff, and should be ON during climb for
vapor suppression which could occur under hot ambient conditions or
after extended idle.
Ground Operation of Air Conditioning System (Optional)
To facilitate faster cabin cooling, prior to engine start leave the
cabin doors open for a short time to allow hot air to escape
cabin.
1. Control Panel ................ SELECT Desired Mode and Temperature
2. Voltage ........................................................................... MONITOR
Decrease electrical load if battery discharge is noted.
3. Annunciator Lights ............................................................. CHECK
a. Verify ALT 1 caution light out and positive amps indication.
4. Engine Parameters ............................................................ CHECK

Extended Ground Operation

For airplanes that experience prolonged engine operation on the
ground, the following procedure is recommended to reduce potential
for spark plug lead fouling and lead build-up on engine valve guides.
1. Set throttle to 1200 RPM.
2. Lean the mixture for maximum RPM.
3. Reduce throttle to RPM for continued ground operations (800 -
1000 RPM is recommended).
Before takeoff, the mixture lever must be returned to the full
forward/rich position.
If further ground operations will be required after the BEFORE
TAKEOFF checklist is completed, lean the mixture again (as
described above) until ready for the TAKEOFF checklist.
P/N 13772-004 P/N 13772-004

Revision 1

• Note •
• Note •
• WARNING •
• Note •
Section 4
Normal Procedures
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