Bell 212 isn't renowned for speed, but a couple of breezy days in the Brent Field saw 170kt or so downwind, with the Decca Danac unwinding at a ridiculous rate
Awfully slow trip back into wind, though!
Also got to 199kt G/S in the BK117 in the High Country, IAS wasn't too high as the tailwind was trying to nasty things to the pitch, any faster and it wanted to nose over, or so it seemed
