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Thread: DH3 - Inconsistent Speed?????
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Old Oct 15, 2022 | 2:15 am
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nzkarit
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Originally Posted by shillard
Flight radar is not connected to a pitot tube on the front of the aircraft.

It's neither accurate, nor reliable when measuring airspeed.
But the transponder is connected to the pitot tube via the avionics. And the transponder is sending the ADS-B messages that FR24 is receiving.

Though in this case the graph is ground speed not air speed so will be coming from the inertia navigation, calculation of wind aloft, and/or GPS.
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