I reckon that's what it is, the auracle gets screwy LOP. Must base the calculation from MP/RPM combination.
From the 602P performance data 193hp per side gives 220ktas at FL200 so 202ktas on 156hp seems to fit.
At ease everybody, I think we've solved this one.
sorry i got no pictured to post
Last edited by Lumps; 29th Jun 2014 at 08:37.
Reason: nup