Pitot Static System; Pitot Static Malfunction; Pitot Heat Current Sensor Annunciation - Cirrus DESIGN SR20 Pilot's Operating Handbook And Flight Manual

Section 3A
Abnormal Procedures

Pitot Static System

Pitot Static Malfunction

Static Source Blocked
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 according to the Airspeed Calibration (Alternate
Static Source) table in Section 5 as appropriate for vent/ heater
configuration.
1. Pitot Heat .................................................................................. ON
2. Alternate Static Source .........................................................OPEN
Pitot Tube Blocked
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.
1. Pitot Heat .................................................................................. ON

Pitot Heat Current Sensor Annunciation

PITOT HEAT Caution
Pitot heat failure. Displayed when Pitot heat switch is ON and Pitot
heat current is not detected.
1. Pitot Circuit Breaker ............................................................ CYCLE
2. Pitot Heat ............................................................. CYCLE OFF, ON
If inadvertent icing encountered, perform Inadvertent Icing
Encounter Emergency Checklist and:
a. Airspeed .......................EXPECT NO RELIABLE INDICATION
b. Exit icing conditions using attitude, altitude, and power
instruments.
3A-10
PITOT HEAT
Cirrus Design
SR20
P/N 11934-004
Original Issue