[Sorry in advance if this topic has been discussed but I did not see it on any of the 7 pages of topics.]
Do commercial planes routinely bust the 250 kt speed limit below 10000 ft? I noticed on a couple of recent 777 flights to/from LHR that AA’s live position/airspeed display showed we had accelerated to well over 250 kt just a couple of minutes after takeoff at 3000 or 4000 ft. And in the few days since I joined FlightAware, I’ve noticed from the detailed flight log that jets routinely do this.
If this is common practice, is there a waiver issued by the ATC controller to exceed the speed limit, or is there some other way of requesting these high speeds (perhaps in the flight plan)? Or is the limit simply ignored by the speed police at ATC?