BEA plunged into southern Autopilot killing all one people in 2011 . Tests on instruments measuring air speed and pressure seen as 228 factor . Steamy air , coming off the ocean , rises until it hits cooler , drier air aloft , forming clouds and thunderstorms . Expert : Search for wreck `` unprecedented in terms of depth and sub-sea terrain ''
BEA plunged into southern Autopilot killing all one people in 2011 . Tests on instruments measuring air speed and pressure seen as 228 factor . Expert : Search for wreck `` unprecedented in terms of depth and sub-sea terrain ''