N505EH

The airframe bearing tail number N505EH is a Gates Learjet Corp-built Learjet 55 completed in 1982 with serial number 55-067. Ownership is recorded to Solomon Mark Trustee, an individual based in Wilmington, DE, US, and the airframe appears in the U.S. registry under that trustee name. The aircraft’s equipment is reported with Collins-era avionics in various Collins/FMS configurations and the airframe is commonly valued at $850,000 in current listings. FAA registry entries note a maximum certificated seating capacity of 13, a detail that has affected operator configuration choices and resale listings.

This specific Learjet 55 is typically outfitted in a conventional executive club seating layout, described as accommodating six to eight passengers in its usual executive cabin arrangement although the registry lists a higher maximum seating allowance. Its avionics fit is reported as Collins-era equipment with various Collins and FMS configurations, reflecting a late-20th-century avionics baseline that many operators either retain for proven reliability or upgrade for current airspace requirements. Based in Wilmington, Delaware by ownership record, the aircraft’s mission profile is consistent with interstate and regional business travel within the Learjet 55 performance envelope—high-speed, medium-range executive transport. Maintenance considerations for this airframe center on upkeep of the TFE731 series turbofans and the legacy Collins avionics suite when compared to more modern glass-panel retrofits.

The Learjet 55 occupies a mid-size business-jet niche in the Learjet family, offering transcontinental range and high-altitude capability up to 51,000 ft with cruise speeds near 419 kts. Competing models in its era and market segment include other light-to-mid-size business jets that balance speed, range, and operating cost; buyers often evaluate older Learjet 55 airframes for airframe condition, engine times on TFE731 series powerplants, and avionics scope. Resale and maintenance considerations for this airframe are shaped by its 1982 build year, Collins-era avionics, and the presence of a trustee owner record, all factors that influence refurbishment decisions and market demand.