The Inmarsat position data was very controversial when it was first announced. This was because the flight path, the last radio contact and last radar signal were all recorded over the South China Sea; a completely different ocean to where the debris was found. Indeed, the first search operation was over and around the designated flightpath, which was literally oceans away from where the plane likely came down. Thanks to Inmarsat, we have a much better, though not completely accurate, understanding of what happened.