N399W

This entry covers airframe N399W, a production Cessna 750 Citation X built in 2001 with serial number 750-0171. The airframe is registered in the US and is owned by Williams International Company (a corporation). Operator or home base details beyond registry and ownership are not published. Notable registry actions and valuation/condition history are not published for this specific airframe.

The aircraft features an executive cabin layout typically configured for 9–12 places, and the specific cabin aboard this airframe measures approximately ~25 ft 2 in in length, ~5 ft 6 in in width, and ~5 ft 8 in in height. Typical mission profiles for the Citation X emphasize high-speed, long-range point-to-point executive transport consistent with its maximum cruise of 528 kts and range of 3,460 nm, making it suitable for transcontinental U.S. missions and some transoceanic routes within range limits. As owned by an aviation-focused corporation, maintenance and operational considerations likely follow manufacturer and Rolls‑Royce engine program schedules; however, specific avionics fit, interior appointments, unique amenities and maintenance records for N399W are not published.

The Cessna 750 Citation X family occupies the high-speed, long-range business jet niche within Textron Aviation’s product line, distinguished by its transonic cruise capabilities and high service ceiling (51,000 ft). Its primary competition historically includes other long-range, high-speed business jets in the super-midsize to large-cabin segment. Buyer and charter demand for Citation X airframes typically favor operators prioritizing speed and long-range capability; maintenance and resale considerations center on engine program status for the Rolls‑Royce AE 3007 series, structural and avionics upgrades, and cabin refurbishment for continued executive use.