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Subject Altimeter accuracy
Thread Number 1 of 1 in thread
Author Andy Bardgett
Posted 05-Nov-17 22:48:00
  We have had a spate of high flights recently and the question of altimeter accuracy has arisen. I seem to think they have to be within 2% or is it 2mB ?

I know my altimeter over reads at height - but only by comparing what I saw with what the logger recorded and, of course, you can't know what that is in flight. If your altimeter under reads however, then you risk busting into controlled airspace from below.

 

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