N604S

The airframe bearing tail number N604S is a 1984-built Learjet 35A with serial number 597, manufactured by Gates Learjet Corp. The aircraft is recorded as owned by BUTLER NATIONAL INC, a corporation based in New Century, KS, US, and is registered in the US. Registry entries for this airframe identify it as a corporate-operated executive transport; its reported market valuation at the available record is $960,000, a figure that reflects age, configuration, and typical maintenance considerations for mid-1980s business jets.

The aircraft is equipped in a typical executive configuration with a 6–8 passenger club/divan layout common to the type, accommodating up to 10 occupants including flight crew in standard practice. Operated from its owner’s base in New Century, KS, the platform is suited to regional to transcontinental corporate missions consistent with its 1,930 nm range and high-speed cruise of 436 kts, enabling non-stop flights between many city pairs within North America. Avionics fit particulars are not published in the provided data; operational considerations for this airframe would center on lifecycle maintenance of Garrett TFE731 engines and avionics modernization to support continued RVSM and high-altitude operations to its 45,000 ft ceiling. The corporate ownership suggests typical operator maintenance programs and interior refurbishment cycles aligned with executive transport use.

The Learjet 35A occupies a light-business-jet niche characterized by high cruise speeds and long-range capability for its class, with the Garrett TFE731 series engines providing reliable thrust ratings of 3,500 lbf each. In the resale and charter market, 1984-model airframes like this one compete with other light jets offering similar mission performance, and buyer demand is influenced by cabin size, upgrade status, and maintenance history. Resale considerations for this airframe include lifecycle engine and airframe inspections, potential avionics upgrades, and the impact of its documented ownership and valuation ($960,000) on marketability.