N550GB

This airframe, registered as N550GB, is a 1977-built Cessna 501 Citation I/SP with serial number 501-0054. The aircraft is recorded as owned by CORDOBESA AVIATION LLC, an LLC based in Belgrade, MT, US, and carries a US registration. The airframe’s factory build year 1977 and serial 501-0054 are reflected in registry entries and maintenance records for this specific Citation I/SP hull.

The reported cabin configuration for this airframe is an executive layout with a forward divan, a mid‑cabin 4‑place club arrangement and two aft seats, plus an enclosed lavatory, supporting an overall 8‑place executive seating arrangement. Avionics reported fitted on this airframe include Garmin 400 WAAS, Garmin 500 WAAS, Garmin GMX-200 MFD, and a Sperry SPZ-500 IFCS, reflecting a mixed Garmin/Sperry fit aimed at modern navigation and flight-reference capability for the platform. Operating from its owner’s base in Belgrade, MT, US, the aircraft’s performance—cruise speed 352 kts and range 1,328 nm—suits short- to medium-range executive missions and regional point-to-point business travel. Maintenance considerations for this specific airframe center on legacy JT15D-1 engine support and the integration of the reported avionics suite within the original airframe wiring and instrument provisions.

The Cessna 501 Citation I/SP built by Cessna Aircraft Company (Textron Aviation) occupies the light twinjet segment characterized by modest cabin capacity and single-pilot certification options on many examples. With a maximum operating ceiling of 41,000 ft, twin JT15D-1 powerplants producing 2,200 lbf each, and cruise performance of 352 kts, the platform targets owners seeking efficient regional executive transport. For this particular airframe, buyer and operator considerations include lifecycle maintenance of the JT15D-1 engines, support and updates for the reported Garmin/Sperry avionics, and the impact of its vintage 1977 build on inspection intervals and component refurbishment or replacement.