N578GG

The airframe bearing tail number N578GG is a 1985-built Cessna 550 Citation S/II with manufacturer serial S550-0079. The airframe is listed as owned by G-3 LEASING INC, a corporation based in Burleson, TX, US, and carries US registration. The airframe’s configuration and equipment history reflect Collins-era avionics with aftermarket upgrades; maintenance and avionics listings have separately reported Honeywell TCAS II and dual Garmin transponders. The airframe valuation in available data is listed at $856,000, indicating its market position among mid-life light jets.

The cabin for this airframe is fitted in a typical 7–8 place executive layout with a belted aft lavatory and measures approximately 15.7 ft in length and 4.8 ft in width, providing the standard executive interior arrangement for the S/II series. Avionics are described as a Collins Pro-Line / Collins-era suite with upgrades including dual Garmin GTX transponders and a Garmin GPS 725 / MFD; listings additionally report Honeywell TCAS II. Typical mission profiles for this specific Citation S/II configuration include short- to medium-range executive transport and light charter operations within its 1,480 nm range and high-speed cruise capability. Based in Texas under corporate ownership, the airframe’s equipment and cabin imply continued use in business or leasing roles, with maintenance considerations aligned to mid-1980s airframe age and the JT15D-4 engine maintenance cycles.

The Cessna 550 Citation S/II occupies the light-cabin, light-jet performance niche for 1980s business jet buyers and lessors, offering transcontinental capability on shorter sectors relative to later, larger Citations. Competing models historically include other light jets of the era; buyer and charter demand for this airframe type centers on cost-conscious operators seeking efficient short- to medium-range speed and runway performance. Maintenance and resale considerations for this specific airframe reflect its mid-1980s manufacture date, the presence of Collins-era avionics with modern Garmin upgrades, and the reported TCAS II fitment on listings.