N604GS

The airframe bearing tail number N604GS is a Gates Learjet 35A built in 1985, serial number 604. The aircraft is registered in the United States and is recorded as owned by the corporate entity SIX HUNDRED FOUR CORP, located in Paramus, New Jersey. The registration is held in the US registry under the listed corporate owner, and available records place the airframe in corporate/charter service rather than public airline operation. Valuation notes indicate a market value of $960,000, reflecting typical mid-life market pricing and condition expectations for a 1985 Learjet 35A airframe equipped with its original turbofan pair.

Operator listings for this specific airframe describe an executive cabin laid out for eight passengers, while the type certificate records seating for 10, indicating a common corporate interior modification to an 8-place executive layout for comfort and mission fit. The Learjet 35A’s long-range capability (approximately 2,857 nm) and high cruise speed (about 418 kts) make the airframe suitable for transcontinental or short transoceanic corporate missions from its New Jersey operator base. Avionics and interior specifics for N604GS are not published here; maintenance considerations center on the twin Garrett/Honeywell TFE731 turbofan engines and the airframe’s mid-1980s vintage, which influence inspection cycles, parts sourcing, and engine overhaul planning specific to this serial number.

The Gates Learjet 35A occupies a light business jet niche defined by high cruise speeds, a relatively long range for its class, and a service ceiling up to 45,000 ft. Competing models in the era and secondary market tend to be other light-to-midsize business jets emphasizing speed and efficiency. Buyer and charter demand for a 1985 Learjet 35A like N604GS depends heavily on maintenance history, engine cycles, and interior refurbishment; resale value is influenced by the Garrett/Honeywell TFE731 engine commonality and the documented corporate ownership, which can aid marketability when records are current.