Recordings of conversations between the missing Malaysia Airlines jet's pilots and air traffic controllers were released for the first time Thursday, two months into the search that has not yielded a single piece debris from the flight. Malaysian authorities published a preliminary report dated April 9, but released on Thursday a detailed timeline of the search and recommended that an international aviation body consider real-time tracking of commercial jets. The report also spelled out four hours of confusion after the jet disappeared on the night of March 8.