Pitot-Static Blockages

They can be insidious, and present a conflicting picture of the airplane's performance and situation. Systems knowledge and good piloting skills are key.

To sense airspeed, the vast majority of airplanes use a pitot tube. Oncoming air enters the tube and is routed to the airspeed indicator or the air/data sensor. That’s where the air’s pressure is measured and compared with ambient or static, then translated into knots or some other measurement and displayed on the instrument panel. […]
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