Editing Boeing 707 (section)

===707-120===
The 707-120 was the first production 707 variant, with a longer, wider fuselage, and greater wingspan than the Dash 80. The cabin had a full set of rectangular windows and could seat up to 189 passengers.<ref>PA, AA, TW and CO 707-120s started with 109–112 "revenue" seats and maybe a few lounge seats.{{citation needed|date=February 2012}}</ref> It was designed for transcontinental routes, and often required a refueling stop when flying across the North Atlantic. It had four Pratt & Whitney JT3C-6 turbojets, civilian versions of the military J57, initially producing {{cvt|13,000|lbf|kN|1}} with [[Water injection (engines)|water injection]]. Maximum takeoff weight was {{cvt|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;<ref name="Pither22">{{harvnb|Pither|1998|p=22}}</ref> 56 were built, plus seven short-bodied -138s; the last -120 was delivered to Western in May 1960.