Hi Genghis, you're right - I accept that more than 180deg will generally be required in SEP types, I just think that a 270deg total is quite a demanding base requirement. What I'm trying to get at is that in real world situations I think the most likely scenario is that following an EFATO, the aircraft will be turned back towards the airfield and the eventual landing area will be somewhere across the airfield / runway departed on. For example, at Wellesbourne, a departure on Rwy 18, EFATO, turnback to right, would (at best) result in a landing somewhere on the grass to the left of Rwy 05. A likely heading of perhaps somewhere around 020? Perhaps a total turn of around 225deg? I just think that excessive low level turning would be overly demanding in real life and will make the model results very pessimistic about success.