Huggy old chap
A whole 38 kgs an hour per eng difference for Fl 80 - Fl 120, at £120 a ton that makes it £9.12 more expensive .
That is really HUGE. It stikes me that you are the sort who would sit in turbulance making pasengers ill so save 100 kgs of gas.
I seem to remembr from my turboprop days the actual fuel flow differed hardly any between Fl 100 and Fl 150.
Anyway all this is not really my point and I'm not going to get into anymore debate over this. My point is don't be so nasty to our ATCO friends they know more about this aviation lark than somtimes us drivers give them credit for and IMHO they do a great job. If you don't agree with me try flying around Greece where they are bloody hopeless.
Sorry about not having any turboprop numbers to quote but I can't be arsed going up to the attic to dust off the old books.
