REFLECTOR: Static port calibration

Scott Derrick scott at tnstaafl.net
Wed Mar 4 19:29:38 CST 2009


I'd say your static port is off by 100 ft, I don't know if thats within
the FAA regs for flight into class C,B or A, IFR flight, flight above
12,000ft or not.

Al Gietzen wrote:
>
> Out playing in the sky yesterday, I decided to do checks on altitude
> and speed readings. I had never done the ‘low pass over the runway’
> test. 150 KIAS, est 80 ft over the runway, altimeter readout on the
> GRT EFIS was maybe 100 ft too high. Hum-m-m.
>
> Went out and flew the orthogonal square about the same speed;
> recording GPS ground speed and IAS in each direction, then took the
> average of each. The speeds agreed within 1.2 knots.
>
> I’ve always found my altitudes consistent with where ATC says I am –
> so I don’t think I need to change anything.
>
> Al
>
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