N'afọ 1965, Joe Sutter si na Boeing 737 development team iji jikwaa imewe maka ọhụrụ airliner, ama kenyere nọmba nlereanya 747. Sutter malitere a ọmụmụ ihe na ndị ọzọ ụgbọelu na-ewu ewu, nwere gbanwere ogologo-anya njem. Ọbụna tupu ya furu efu CX-HLS nkwekọrịta, Boeing jụrụ Juan Trippe, president nke Pan American World Airways (Pan Am), otu n'ime ha kasị mkpa ụgbọelu ahịa, na-ewu a njem ugbo elu ihe karịrị ugboro abụọ nke size nke 707. N'oge a, ọdụ ụgbọelu mkpọchi, njọ site na-amụba ọnụ ọgụgụ nke ndị njem na-ebu na dịtụ obere ugbo elu, ghọrọ nsogbu na Trippe chere nwere ike lebara site a ibu ọhụrụ ugbo elu.
Boeing 707 na Douglas DC-8