Searchers have found traces of the crashed AirAsia Flight 8501, which lost contact with ground controllers shortly after requesting a weather-related course change. Reuters reports that both debris and some passenger remains have been recovered off the coast of Borneo, in a search complicated by waves "up to three meters high." From the report: About 30 ships and 21 aircraft from Indonesia, Australia, Malaysia, Singapore, South Korea and the United States have been involved in the search. The plane, which did not issue a distress signal, disappeared after its pilot failed to get permission to fly higher to avoid bad weather because of heavy air traffic, officials said. It was travelling at 32,000 feet (9,753 metres) and had asked to fly at 38,000 feet, officials said earlier. Pilots and aviation experts said thunderstorms, and requests to gain altitude to avoid them, were not unusual in that area. ... Online discussion among pilots has centred on unconfirmed secondary radar data from Malaysia that suggested the aircraft was climbing at a speed of 353 knots, about 100 knots too slow, and that it might have stalled.