plane flew southwest. but finding debris could be part of the monumental search, first, experts will use mathematical models of wind and currents to see how far the debris drifted. when they agree on a general system, the sonar will be dropped to locate the transmitters. but the pings can only be detected from a mile away and the batteries only last 30 days. that means they will send man or unmanned subs, but the plane could be 12,000 feet deep about the same as titanic or the air france plane that crashed back in 2009. the crash debris was found in five days but it took two years and $100 million to recover the black boxes. add to that the indian ocean is known for underwater volcanos, earthquakes and landslides. and if you have lava or mud on the wreckage, megyn, the odds