First flight of the second prototype Vickers Type 667 WB215 Vickers-Armstrongs Valiant.
11 April 1952. First flight of the second prototype Vickers Type 667 WB215 Vickers-Armstrongs Valiant. British four-jet bomber, originally developed for use as high-level strategic bomber, but its role, like other V bombers, was changed to low-level attacks.
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