Kunyange zvazvo C-141 Starlifter akanga achiunzwa, vakuru vaifunga kuti zvikuru yakakura uye anokwanisa ndege yaidiwa, kunyanya kutakura mitoro kuti haazorambi kukwana chero huripo ndege. Zvidzidzo izvi zvakatungamirira kwokutanga zvinodiwa kuti CX-Heavy Logistics System (CX-HLS) muna March 1964 kuti ndege ine mutoro inokwana 180,000 pondo (81,600 kg) uye nokukurumidza Mach 0.75 (500 kana 800 km / h), uye unrefueled siyana 5,000 nautical makiromita (9,300 km) ane payload pamusoro 115,000 pondo (52,200 kg). payload aifanira kuva 17 tsoka Bay m) yakafara ne 13.5 tsoka yakakwirira (30 m) uye 100 tsoka refu nemikova mberi uye shure. Chido kuchengeta injini pamusoro chero ndege iripo.
Boeing, Douglas, uye Lockheed