Today in 1910, air-to-ground radio transmission is born; 1913, the first loop-the-loop maneuver is performed; in 1939, the jet age begins with the first flight of the Heinkel 178; 2006, Comair 5191 crashes in Lexington, Kentucky.
U.S. airline passenger revenue, based on a sample group of carriers, rose 25 percent in June compared to the same month in 2009, marking the sixth consecutive month of revenue growth, Air Transport Association of America said W...