Originally Posted by
B-HKD
Now that the NOTAM has been out for a few days, has anyone actually flown anywhere close to OFP speeds associated with CI400? B777/A380.
Considering its close to .860 on the B777, turbulence and ATC will surely be slowing things down constantly. Looking at the airborne times for some Europe-DXB flights (FRA/AMS etc.) I don't see any difference over the past few days.
On the other hand, there are plenty of operators using CI80-150 on the B777 now that the fuel price has come down. Surely even EK knows that CI400 just isnt going to happen when everyone else is cruising around at significantly slower speeds
CI400 also changes your cruise level potentially as the FMC is prioritising time a lot more than optimum level.