On Wed, 03 Dec 2003 16:33:29 -0600, Dan Luke wrote:

"Jim" wrote:
I plan on an honest 140 IAS in the 182RG I rent,

That doesn't tell us much if you don't say at what altitude you're
indicating 140.

And I've read reports of airspeed indicators with instrument error of more
than 10 kt. Plus each aircraft has its own static source position error
which affects the accuracy of the airspeed indications.

Any conversions from IAS to TAS aren't worth too much unless you've done
the testing to calibrate your airspeed indication system. TAS determined
from GPS groundspeed on multiple tracks can be accurate, if you know how
to do the calculations properly.

--
Kevin Horton RV-8 (finishing kit)
Ottawa, Canada
http://go.phpwebhosting.com/~khorton/rv8/
e-mail: khorton02(_at_)rogers(_dot_)com