Originally Posted by
LarryJ
No. ATC is first come-first served. Only exceptions (non-emergency) are for operational efficiency which would be based on aircraft performance, not what the airplane is carrying.
Interesting. I just always happen to notice how those Atlas Air 747s sit and sit and sit on the tarmac near the end the runway at ORD while the long line of Uniteds and Americans roll down the runway. I figured it had something to do with what's onboard, but maybe not.