Editing Boeing 707 (section)

===707-020===
[[File:Cyprus Airways Boeing 720B G-BCBB LHR 1978-8-24.png|thumb|The 707-020 (720) is 9 ft (2.7 m) shorter than the 707-120.]]
{{main|Boeing 720}}

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Announced in July 1957 as a derivative for shorter flights from shorter runways, the 707-020 first flew on November 23, 1959. Its type certificate was issued on June 30, 1960, and it entered service with United Airlines on July 5, 1960. As a derivative, the 720 had low development costs, allowing profitability despite few sales.

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Compared to the 707-120, it has a length reduced by 9 feet (2.7 m), a modified wing and a lightened airframe for a lower [[maximum takeoff weight]]. Powered by four Pratt & Whitney JT3C turbojets, the initial 720 could cover a {{cvt|2,800|nmi}} range with 131 passengers in two classes.
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Powered by JT3D turbofans, the 720B first flew on October 6, 1960, and entered service in March 1961. It could seat 156 passengers in one class over a {{cvt|3,200|nmi}} range. A total of 154 Boeing 720s and 720Bs were built until 1967. Some 720s were later converted to the 720B specification. The 720 was succeeded by the Boeing 727 trijet.

[[File:Boeing 707-120 without “eyebrow windows”.jpg|alt=Boeing 707-120 without "eyebrow windows"|thumb|Boeing 707-120, the aircraft's first production variant]]