Boeing Everett Assembly Plant, Airport Road, Everett, Snohomish County, Washington, 98204, United States
Boeing Commercial Airplanes
已确认日期确定性: 已确认已公布为确定日期来源对日期的表述有多确定：已确认、已排期、预估、已推迟或未核实。显示所有“已确认”的图钉可信度 78%总体可信度: 78%该图钉的来源和参考资料对其日期的支持程度。包括来源在内的 4 份资料对图钉开始和结束时间支持程度的加权平均；资料每比最新的一份旧 180 天，权重减半显示所有可信度不低于 75% 的图钉
Yesterday's Airlines: "The SP first flew on July 4, 1975"; Boeing Classics titles its archive film "First Flight of the Boeing 747SP, July 4, 1975".[1]The shortened, long-range Boeing 747SP flew for the first time on 4 July 1975. Built for Pan Am's New York-Middle East routes, it entered service with Pan Am on 25 April 1976.
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