Originally Posted by
Una Due Tfc
Both still being left behind in my sector by any 747 in a hurry.
Those B747s would be guzzling at least twice as much fuel as the A350 or B787. An A350 or B787 "in a hurry" can go fast too: MMO = M0.89 (A350), M0.90 (B787) vs M0.90 (B747).