Originally Posted by
B2N2
This applies everywhere the FAR applies.
Heavies can accelerate to their min clean speed if above 250kts.
No request or clearance required although I do always notify ATC of my speed requirements below 10K.
That’s what I do as I have a similar understanding, although I have yet to find an actual reference allowing the practice as theoretically you could keep some flap out and clean up at 10,000’ to follow the letter of the law.