Brit312
Speaking of the IAD-Miami sector, was there something 'different' about the subsonic cruise altitude out of Washington? I only ever flew on this sector once,(down the back) but I remember that we did a very rapid transonic acceleration after we crossed the North Carolina coast at Wilmington, from something like FL400, which was only a little above VLA. The air noise over the upper fuselage increased much more rapidely than usual, even charters.
It was an awful long time ago, and if I've screwed up here (again) I heartily apologies .
Regards and salutations..
Dude