Originally Posted by
satpak77
I don't think an ELT is useful for SAR if sunk underwater very deeply. 25 feet+ I doubt it. RE: radio waves
No, not useful.
Originally Posted by
satpak77
I would think a US military/intel agency has the ability to detect a large, odd, object in the ocean tho and am certain we will hear some news in a few days yeah/neah on located wreckage. SAR performed by Vietnam, no, US agencies, yes
No they don't. If you can solve that problem the patent will be worth hundreds of millions and will put every submarine in the world out of business. Two-billion-dollar subs are only useful because they CAN'T be found easily.
To find anything on the bottom will require military or specialized civilian vessels with sonar gear to search the ocean floor one meter at a time. Not practical until you narrow down the search area.
I can think of one potential means by which the crash location could have been detected but I would have thought they would have announced that by now if that was the case.