I have a 1957 PA18A and am confused over the CAS vs IAS issue. The POH gives speeds in MCAS. Does that mean that the AI also reads in MCAS? Or does it read in MIAS?
I thought I had it figured but a, now totally confused on reading Sparky Imeson's book on mountain flying on this subject.
Can somebody please explain...
Basically I am trying to figure out Vs. I am getting 38mph indicated and around 44mph GS (averaged over four directions). Is 38 IAS or CAS and if it is IAS how do I convert to CAS?
Thanks.
I thought I had it figured but a, now totally confused on reading Sparky Imeson's book on mountain flying on this subject.
Can somebody please explain...
Basically I am trying to figure out Vs. I am getting 38mph indicated and around 44mph GS (averaged over four directions). Is 38 IAS or CAS and if it is IAS how do I convert to CAS?
Thanks.