N551MS

The airframe bearing registration N551MS is a 1980-built Cessna 501 Citation I/SP, serial number 501-0147, manufactured by Cessna (Textron Aviation). This specific airframe is registered in the United States and is recorded as owned by SIMPSON MICHAEL A, an individual based in Bridgeport, TX, US. The documented information for this aircraft does not list a multi-owner history or other recorded transfers, and no formal valuation or condition summary is published in the supplied data. The aircraft’s configuration and equipment reflect an executive mission role typical of late-model Citation I series airframes.

The cabin of N551MS is fitted as an executive four-passenger club layout with a forward refreshment center, an aft-facing barrel seat, and a belted aft lavatory, consistent with short to mid-range corporate missions. Avionics for this airframe include a Collins suite with a Sperry PSZ-500 autopilot, dual Collins TDR-90 transponders, Garmin GPS-400W, Collins VHF radios, DME-40, TAWS and weather radar, supporting single-pilot capable IFR operations and situational awareness on regional trips. Typical mission profiles enabled by the 1,327 nm range and 345 kts cruise speed would include point-to-point business travel within continental U.S. routes and short international hops to nearby countries. Maintenance considerations follow the jet’s twin JT15D engines and legacy Collins avionics package, which may require avionics upgrades and standard component life-cycle monitoring for continued reliable operations.

The Cessna 501 Citation I/SP sits in the light business jet niche, offering balanced short-field performance and efficiency for owner-operators and small charter operators. With a service ceiling of 41,000 ft, the type competes with contemporaries such as early-model Learjets and other light Citations in owner-flown and small-cabin charter roles. Resale and maintenance considerations for this airframe are influenced by the age (built 1980), the JT15D powerplants’ overhaul status, and the installed avionics suite; buyers typically factor modernization of navigation and communications gear and continued structural and engine program compliance into valuation.