Does anyone remember the Boeing 747-300 with the stretched upper deck?

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The Boeing 747-300 featured an upper deck that was 7.11 metres longer than the previous jumbo jets. This immediately distinguished it from its predecessors and also permitted a higher cruising speed of Mach 0.85. First flight took place on 5 October 1982, and the launch customer Swissair received the first example on 23 March 1983. […]

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