> Actually, the drift over a 15-minute flight (typical) is very little,
> especially if the pilot has taken the recommended precautions of putting
> the bird out on the flight line to get the temps up.  He'd have a pretty
> tough time flying it if he pulled it out of his air-conditioned car and
> flew over a hot black runway, surely, but otherwise they are adequately
> stable.
>
> Andy
>
All makers of piezos recommend letting the temp stablize before flying.
The 'better'
piezos have better insulation/compensation to minmize temp drift. JR has
gone to plastic
chrome plating(to reflect heat) on their sensor module.