18K views · 257 reactions | Boeing 707/Dash-80 test fliight and interviews with Tex Johnston. Includes the rare footage and pictures of Tex's famous barrel roll of the Dash-80 over Seattle Seafair in 1955. | Airline Secrets Exposed | Facebook

WOW - A Boeing 707 upside down! "The Famous Boeing 707 Prototype Barrel Roll Over Lake Washington" On Aug. 7, 1955, Boeing’s chief test pilot, the legendary Alvin “Tex” Johnston, pulled an impressive stunt in the prototype of the Boeing 707. At a speed of 490 miles an hour, he flew the 248,000-pound aircraft upside down. An engineer managed to capture the moment on camera where you can see the engine overlooking Washington city This was the Boeing's entry into the commercial jet age. | Ireland W