原来如此


【 在 Ferdinand 的大作中提到: 】
: Here's why Boeing originally skipped the 717 designation for commercial airliners:
: Early military use: The "717" designation was used internally by Boeing in the 1950s for the military C-135 and KC-135 jet tankers. This left the number unavailable for a commercial product at that time.
: Marketing strategy: Boeing decided to use the "7x7" naming convention for its commercial jet aircraft, starting with the 707. This branding strategy emphasized the difference between their new jets and previous propeller-driven aircraft.
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FROM 111.201.29.*