N61SJ

This airframe, registered as N61SJ, is a 1983-built Learjet 55 with serial number 55-081, manufactured by Gates Learjet Corp. The aircraft is held by BYRUM LYLE, Trustee, an individual owner located in Roswell, New Mexico, and it appears operated from that home base under U.S. registry. Notable registry data for this airframe include its U.S. registration and trustee ownership; the airframe is valued in current-market shorthand at $1,500,000, indicating a mature-condition late-model 55-series example.

The cabin of this Learjet 55 typically reflects the model’s executive ethos: an executive layout commonly fitted for seven passengers in club seating, while the type certificate allows transport-certified layouts up to thirteen seats, and this specific airframe is reported with the higher-capacity seating capability. Standard fitment for the 55-series includes a forward galley and aft lavatory; many individual airframes, including examples like N61SJ, retain that arrangement. Avionics on the airframe are consistent with Collins-era 55-series equipment, though specific fit varies by airframe and many have been retrofitted over time. Typical missions for this airframe include medium-range executive transport and higher-altitude fast business trips out of its Roswell, NM base, with maintenance considerations tied to age, TFE731 overhaul schedules, and common avionics upgrade paths.

The Learjet 55 occupies a mid-size, higher-performance niche within light to midsize business jets, offering transcontinental-range capability paired with high cruise speed and a 51,000 ft ceiling. Competing models in the era and used market include other 1970s–1980s light-midsize business jets where buyers weigh operating economics, available cabin layouts, and retrofit potential. Resale considerations for a 1983 Learjet 55 like N61SJ focus on engine time since overhaul, avionics modernization, and cabin configuration; the indicated market value of $1,500,000 reflects these lifecycle and demand factors.