Tekata, unless I'm misreading something (quite possible) I think you misinterpreted the question in JD-EE's post. I think he was saying something like
- assuming they were on course at 0210 and then decided they were in a bad place and for some reason decided to turn, what is the turning circle/radius at FL350 and 468kt?
- Assuming they turned starting at 0410, and further assuming they hit sometime near 0414 or a little after, where could they have hit?
Its my opinion that the impact point was some place they could
physically reach in a descent from FL350 to FL0, with the descent and any associated direction change starting no sooner than 0210.
I'd like to know how sharply they could have turned in Alternate 2, starting at FL350 at 0210, and possibly descending thereafter.
In other words, can we match the airplane characteristics to the drift data and end up at the same point in the water?