(B2431) wrote:



It's OAT. Air speed measured with just pitot and static pressure is referred to
as indicated airspeed, IAS. If you temperature compensate it becomes true air
speed, TAS.


Well, it's been many years but ISTR that there's another step
here. Isn't there such a thing as RAS?, maybe Rectified Air
Speed?...IAS corrected for temp? (or maybe CAS?). I thought TAS
was IAS corrected for altitude?

Man!...it was something like 27 years since I last stepped down
that six foot ladder under the tail of an Argus...and about 50
years since the F/E course where I learned this stuff (so cut me
some slack guys!).
--

-Gord.