@Super re: pre-crash broadcasting. Attractive concept. I would refine it away from CVR audio (creepy, controversial) and even FDR (too much info) though. All you want is continuous (or very frequent) GPS data, to aid in (at least) locating FDR/CVR more quickly later. The biggest barrier to success that I see is "who's listening?" You'd really have to code it in to an existing comm or transponder channel rather than setting up some new worldwide listening system. And even then, would an AF scenario be in range of anything? Any existing "emergency (civilian) satellite bandwidth" that could be quickly and reliably grabbed? I have no idea really.
