Pilot Tex Johnston Performs Roll In Dash-80 Prototype Aircraft In 1955. It was later renamed the Boeing 707.
As part of the Dash 80s demonstration program, Bill Allen invited representatives of the Aircraft Industries Association and International Air Transport Association to the Seattle's 1955 Seafair and Gold Cup Hydroplane Races held on Lake Washington on August 6, 1955. The Dash-80 was scheduled to perform a simple flyover, but Boeing test pilot Alvin "Tex" Johnston instead performed a barrel roll to show off the jet airliner.
The next day, Allen summoned Johnston to his office and told him not to perform such a maneuver again, Johnston's assertion that doing so was completely safe. Boeing Chief Test Pilot John Cashman stated that just before he piloted the maiden flight of the Boeing 777 on June 12, 1994, his last instructions from then Boeing President Phil Condit were "No rolls".
From Aviation Explorer