N501SW

This entry covers the specific airframe bearing the U.S. civil registration N501SW, a 1985-built Cessna 501 Citation I/SP with serial number 501-0689. The airframe was manufactured by Cessna Aircraft Company (Textron Aviation) and is recorded as owned by CAPEX OILFIELD SERVICES INC, a Non Citizen Corporation based in Williston, ND, US, which serves as its operator and home base. The airframe is single-pilot certified in layouts common to the Citation I/SP family, and its registry reflects U.S. registration status US; the documented transfer into corporate oilfield operations represents the most notable ownership change in its recorded timeline. Condition and valuation details are not published in the source data.

The cabin of this airframe follows an executive Citation I/SP configuration, with a typical 6–8-place layout and single-pilot certification common to the model; on this airframe the layout capacity is recorded as 8 seats. Operated by CAPEX OILFIELD SERVICES INC out of Williston, ND, US, the aircraft is naturally suited to short- to medium-range executive, business-support, and offshore/oilfield shuttle missions within its 910 nm range and at a cruise of 345 kts. Maintenance considerations for this specific airframe will align with its twin Pratt & Whitney Canada JT15D-1B engines, each rated at 2,200 lbf, and with airframe age dating to 1985, implying adherence to age-related inspection and life-limited component tracking customary for mid-1980s Citation airframes.

The airframe is a member of the early light-jet Cessna Citation family, the Cessna 501 Citation I/SP, designed to provide low-cost, single-pilot executive transport with moderate speed and range. With a service ceiling of 35,000 ft and cruise of 345 kts, this model occupies a performance niche between turboprops and later-generation light jets; it competes historically with contemporaries offering similar payload/range profiles. Buyer and charter demand for this specific airframe type is influenced by operating economics of the JT15D engines, parts availability for a 1985 airframe, and the appeal of single-pilot certification for corporate and charter operators.