Posted by Aucky:
I find the most common error is learning the difference in approach speed judgement coupled with the need for compensating for loss of translation lift etc during the approach which might be more 'hands-on' than the normal fixed wing approach(?).
Great observation. I was guilty of this very technique. I would fly down final at a steady 60 knots. My instructor, brand new with 200 hours, had never flown a plank. He asked why I "was burning it in". Huh? The final looked quite normal to me, and comfortable. There are "habits" in the FW world that don't readily translate to rotary flight. I expect transitioning from RW to FW is easier than the other way.