Its a CRP5 job! I don't have mine to hand so Ill try do it in my head...
TAS would be easy to work out using the ALT/Temp window. Getting TAS by looking at the number above the 240 on the inner scale. Its below 300kts so no need to worry about compressibility
MH - apply variation, variation east magnetic least.
GS and drift - you would work out on the reverse side using the wind data and your TAS.
MT - apply variation and drift.
WCA - is difference between MH and MT (or TH and TT).
I may have missed something out, Its been a good year since i've even looked at one of these. Even forgot half of the mnemonics. I'm sure some one will correct me if i've said something in the wrong order.
Last edited by wbryce; 5th Jun 2008 at 17:45.