mm43;
Thanks for your response. While no messages from a failing radar would be highly unusual especially given the pattern of other messages, you are right in that "nothing issued" does not prove nothing happened, nor does it substantiate failure. As a safety specialist, I choose neither to give the crew the benefit of the doubt or look to them for answers but await where whatever evidence can be mustered, leads us. In the absence of the recorders (and even with them) we must stick with open questions in all areas, even the more difficult-to-accept ones such as crew performance until, somehow, they can be eliminated one by one towards a probable scenario, but I strongly suspect you already know and appreciate this necessity.
I am curious if the search continues either under the auspices of Airbus etc or informally and if so, are they using any of your information. I know that is speculative but for me it seems wholly reasonable. Perhaps they are already thinking along the same lines but I am a believer in "what, not who" and if good data or thinking can be had, the source is less critical than the use of same.
PJ2