I was reading an article (I think from Flight International) that indicated the data from the flight was, in fact, filtered internally.
Would this tend to hide the sudden transients and control extremes that are being talked about here?
If the data extremes can not be determined from the FDR, then what course of action can the investigators take apart from some intelligent guesswork ?
The same article also refers to the testing of a fin assembly identical to the one from the destroyed aircraft.