N550SG

This entry covers airframe N550SG, a Cessna Citation S/II (S550) built in 1985 with serial number S550-0070. The airframe is owned and operated by NUNYA LLC, a corporation based in Irvine, CA, US, and is registered in the US civil registry. Notable registry action includes its documented corporate ownership transfer to NUNYA LLC; current market valuation and condition records list the airframe at $856,000 with standard executive outfitting for its model and vintage.

The cabin of N550SG is fitted in an eight-place executive configuration with a forward two-place divan, a mid-cabin four-place club arrangement, and two forward-facing seats aft, matching common corporate interior schemes for S/II airframes. Avionics installed on this airframe include a Honeywell FZ-500 IFCS / Pro Line II suite augmented by Garmin 750/530 units and dual Collins transponders, providing a mixed OEM/retrofit panel suitable for IFR corporate missions. Typical operations for this airframe are short- to transcontinental business routes within its 1,998 nm range and cruising at approximately 403 kts to optimize day-trip city-pair missions, often operating from corporate bases in Southern California. Maintenance considerations follow light-jet schedules for the JT15D engines and avionics support for the Honeywell/Pro Line II architecture and Garmin additions.

The Cessna Citation S/II (S550) sits in the light-to-light-medium corporate jet niche, offering twin JT15D engines and a high single-pilot-capable cruise performance with a 43,000 ft service ceiling. Competing models in the era included other light jets offering similar speed and range; market demand typically favors well-maintained, avionics-upgraded examples for charter and owner-operator buyers. Resale and maintenance considerations for N550SG reflect the need for ongoing JT15D lifecycle management and avionics commonality to sustain its documented valuation of $856,000.