GlobalNav;
Thank you for your suggestion and link - very helpful indeed. The issue in the flight data is the fact that the FDR stops at 04:47:33.5 while the CVR continues, (as per explanation in the CVR Group Report) until 04:47:41.7 CDT. Getting the timings synchronized, particularly the extrapolation after 47:33.5, was a bit of a challenge without further data. Up to this point I was using an average of 252fps to back-calculate the various distances from either the threshold or the EOR as was stated in the various reports, and wasn't aware of this excellent report.
The GoogleEarth presentation only makes it easier to visualize - my own was also done last September or so from the preliminary work and some guesswork, (crossing altitude at IMTOY for example), using a groundspeed that is typical, about 240fps.
I look forward to mm43's work - his was very helpful in the AF447 threads.