Boeing 707 lb (57.8 kN) with water injection. Maximum takeoff weight was 247,000 lb and first flight was on December 20, 1957. Major orders were the launch order for 20 707-121 aircraft by Pan Am and an American Airlines order for 30 707-123 aircraft. The first revenue flight was on October 26, 1958; 56 were built, plus seven short-bodied −138s; the last −120 was delivered to Western in May 1960. The 707-138 was a −120 with a fuselage 10 ft shorter than the others, with 5 ft (three frames) removed ahead and behind the wing, giving increased range. Maximum takeoff weight was
Giles Guthrie in total. Guthrie resumed flying and captained proving flights of the VC10, including a transatlantic demonstration to Boston. BOAC were permitted to purchase two Boeing 707 freighters during 1965 and after taking full ownership of the BOAC-Cunard joint venture, the two Boeing 707 passenger jets which Cunard Line had contributed to the joint venture (through their Cunard Eagle Airways subsidiary) passed to BOAC. Passenger growth and load factors quickly increased under Guthrie's tenure, and he invested in larger aircraft with more passenger capacity than either the Vickers Super VC10 or the Boeing 707 could provide. Boeing and Pan American World