Originally Posted by
flightfocus
Also you will probably find that any decent controller will be uttering those magic "cleared for take off" words when you have about 45secs remaining for the time to run as it is measured wheels up to wheels up. They want you to be rotating at 2mins+1 sec or 3mins + 1 sec. Nothing more infuriating than a pilot who thinks he knows about wake turbulence and will not roll until the 2mins has elapsed.
That depends! If you started timing when the previous aircraft began takeoff roll...