Our airline has recently emberked on a fuel saving intiative. One of the major changes that has come from this is the change of cost index. On the 777 it translated to a change from 120 to 14. This results to a cruise speed of around M.81 vs M.84. One a couple of occasions, I have had controllers in Europe ask us to confirm our aircraft type because of the speed and even one asking if there was a problem!
I just wanted to know from other 777 pilots out there what cost indexes and/or cruising strategies/speeds you are flying?
Cheers
