Xitaa ka hor inta uusan lumin heshiiskii CX-HLS, Boeing waxaa weydiistay Juan Trippe, madaxweynaha Pan American World Airways (Pan Am), mid ka mid ah macaamiisha ugu muhiimsan ee diyaaradaha, si ay u dhisaan diyaarad rakaab ah oo ka badan laba jeer cabbirka 707. Inta lagu jiro waqtigan, ciriiriga garoonka diyaaradaha, oo ay sii xumeeyeen tirada sii kordheysa ee rakaabka lagu qaado diyaaradaha yar yar, waxay noqdeen dhibaato Trippe u maleeyay in lagu xallin karo diyaarad cusub oo weyn.
Boeing 707 iyo Douglas DC-8