I don't want to contradict you lot. But I can't, off the top of my head, recall any ET procedures which don't allow us to accelerate at the stipulated altitude whether we've completed the turn or not.
The SOP states that at accel altitude, carry out a level acceleration through flap retraction to Single engine climb speed plus any icing increment (+20kts) continue climbing at that speed to the MSA or higher and follow the emergency turn. Q400.
Granted I haven't been to Sion, Chambery or Innsbruck in the Q400, that might happen this year. But I can recall from my 146 days, as BOAC and Denti stated, that there are limitations at these places, generally V2 or V2+10 with take off flap. These are always annotated on the plates and in the airfield brief. I've always assumed (the mother of all fcuk ups!) that unless a speed limit is stated I can accelerate normally and nobody has ever questioned that.
Interesting thread chaps. Smokey and Mutt I've taken onboard your points and will be having a quiet chat with my Fleet Manager soonest.