Cirrus DESIGN SR22 - Pitot Static System; Pitot Static Malfunction

Cirrus Design Section 3A
SR22 Abnormal Procedures
P/N 13772-002 3A-15P/N 13772-002 3A-15
Pitot Static System
Pitot Static Malfunction
Static Source Blocked
1. Pitot Heat ...................................................................................ON
2. Alternate Static Source .........................................................OPEN
Amplification
If erroneous readings of the static source instruments (airspeed,
altimeter and vertical speed) are suspected, the alternate static source
valve, on side of console near pilot’s right ankle, should be opened to
supply static pressure from the cabin to these instruments. With the
alternate static source on, adjust indicated airspeed slightly during
climb or approach in accordance with Section 5, Airspeed Calibration -
Alternate Static Source as appropriate for vent/ heater configuration.
Pitot Tube Blocked
1. Pitot Heat ...................................................................................ON
Amplification
If only the airspeed indicator is providing erroneous information, and in
icing conditions, the most probable cause is Pitot ice. If setting Pitot
Heat ON does not correct the problem, descend to warmer air. If an
approach must be made with a blocked Pitot tube, use known pitch
and power settings and the GPS groundspeed indicator, taking
surface winds into account.
Reissue A