Flight Aware Malaysia Air flight 370Several online flight-tracking services can locate airplanes in real-time, using GPS navigation data transmitted from the aircraft themselves. But in the case of Malaysia Airlines flight 370, which disappeared from radar screens more than 48 hours ago, a hole in coverage maps means even these sites lack answers. “We lost tracking for it pretty early on,” a spokesman for FlightAware told FoxNews.com. Malaysia Airlines Flight MH370, a Boeing 777 with 239 people on board, departed Kuala Lumpur in Malaysia on March 8 at 12:43 a.m. local time en route to Beijing, China, according to FlightAware, which published a minute-by-minute tracking log of the flight. The plane was at 35,000 feet at 1:01 a.m. Saturday morning. MORE