Originally Posted by
Adlerdriver
Just stop. First of all in the US, approval for a heavy a/c departure using clean speeds exceeding 250 below 10K is approved without request (FAR 91.117). Second, they declared an emergency and told ATC the speed they needed to maintain. Not sure what the deal was with the fuel jettison, but they were fine regarding airspeed.
What's the clean speed for MTOW 777, 275 or so? That's the max they can legally do.
They were "slowing down" to 280. I stand corrected if it's over 280.