The barrel roll
At Seafair on August 6, 1955, Boeing test pilot Alvin "Tex" Johnston performed a barrel roll in the Dash-80 at 500 feet. Johnston was summoned to Boeing president, William Allen's office the next day and after explaining that the maneuver was absolutely non-hazardous was told not to do it again. To date Johnston is the only pilot to have performed a roll in a four engine jet transport. (Other big four engine jet aircraft have done barrel rolls; for instance, the Avro Vulcan XA890 was rolled by Roly Falk on the first day of the 1955 Farnborough Air Show, but it was a bomber). This story appears on a video called 'Frontiers of Flight - The Jet Airliner', produced by the National Air and Space Museum in association with the Smithsonian Institution in 1992. The roll can be viewed on video at AviationExplorer.com.