Does anyone (and I guess I'm looking at you, Peter!) know if a pressure error correction value is documented for the TB20?
Socata provides information for the TB20 when using alternate static, so one can only presume that the PEC with a normal static source is negligible.
I verified this for the JAA IRT 1 year ago and the examiner agreed.
It should be at the start of the performance section of the POH, as that's a normal requirement of the part 23 certification rules.
I don't have a copy of that aircraft's POH, but any operator will.
G