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It seems that I am getting upto a 11 knot difference between my airspeed
indicator and the calculated calibrated airspeed as witnessed by the test
flight data attached. As the EFIS pitot-static system was calibrated by an
avionics shop yeterday and found to be exact, I can only assume it must be
due to a position error in the static ports (air is being sucked out of them
in flight. Has anyone relocatted the ports to a more suitble position, or
done
some trick like putting a piece of clear tape ahead of the port to trip
the airflow over the port to improve their situation. Any suggestions
appreciated.
Correct Vcas is required in order to get at the real TAS numbers for cruise.
Best Regards
Allan Saul N203AF
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