Boeing’s parade of 7X7 names (the 727, 737, 747, and on and on) have been around for decades. Where did they come from, and why are they still here?
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vehiclesgarage.com
vehiclesgarage.com
Boeing’s parade of 7X7 names (the 727, 737, 747, and on and on) have been around for decades. Where did they come from, and why are they still here?
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