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The American Concordes that never flew - BBC Future
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Pakiscience - SUPERSONIC PIA ✈️ . Most people are unaware that Pakistan International Airlines (PIA) had placed orders for the Boeing 2707-300 SST (Super Sonic Transport) with a speed of Mach 2.7
Supersonic Aircraft: Boeing currently not focused on supersonic aircraft development and that could very well be a prudent strategy, Infra News, ET Infra