N7221U

This airframe, registered as N7221U, is a Boeing-built Boeing 720-022 with manufacturer's serial number 18074, completed in 1961 by Boeing Commercial Airplanes. The airframe is owned and operated by United Airlines (corporation, United States) and carries a US civil registration. Notable registry and valuation details are not published for this specific airframe; records indicate continued operation under United Airlines stewardship without publicly documented transfers.

The configuration for this specific Boeing 720-022 allocates 143 passenger seats, reflecting a single-airframe layout optimized for medium- to long-range trunk routes within the aircraft's published performance envelope. Avionics and cabin fit are consistent with Boeing 720-class installations of the era, supporting typical transcontinental and higher-density short international missions enabled by a cruise speed of 540 knots and a service ceiling of 42,000 feet. Operated from United Airlines' US-based network, the airframe's mission profile emphasizes efficient routing on high-demand schedules where its range of 3,680 nautical miles offers flexibility. Maintenance and operational considerations for this airframe type center on managing four Pratt & Whitney JT3C-7 powerplants and their legacy systems, with condition and specific modification records not published for this serial number.

The Boeing 720-022 occupies a niche among early jet transports as a derivative optimized for shorter fields and higher-frequency routes than larger contemporary models. With four JT3C-7 engines producing 12,000 lbf each, the model delivers performance suited to the era’s airline networks, competing historically with other early narrow-body jets in airline duty. Buyer and charter demand for such an airframe today is largely historical or specialized, and resale or continued operation considerations hinge on legacy maintenance, parts availability, and certification status, none of which are publicly detailed for this specific aircraft.