N66SG

This article covers the specific Learjet 45 airframe bearing registration N66SG, built in 2000 with manufacturer's serial number 45-073 by LEARJET INC. The aircraft is recorded as owned by the corporate entity NORTH COAST AVIATION, based in Orchard Lake, MI, US, and is registered in the US. Listed in records as under corporate ownership by NORTH COAST AVIATION, the airframe’s public registry entries identify its home base in Orchard Lake and show no additional recorded transfers in the supplied data. Valuation and condition summaries are Not published.

The Learjet 45 airframe N66SG is configured to accommodate 12 seats, aligning with common light-medium business-jet layouts emphasizing a balance of passenger capacity and performance for short to mid-range missions. Typical operations for this model include point‑to‑point corporate transport, on-demand charter, and executive shuttle flights within a roughly 1,690 nm radius at cruise speeds near 425 kts and operating altitudes up to 51,000 ft. Based from Orchard Lake, MI, US, the operator’s mission set likely includes regional business hops across the Midwest and transcontinental legs within the aircraft’s range envelope. Specific cabin layout details, avionics fit, and unique onboard amenities for this particular serial are Not published; maintenance considerations follow Learjet 45 norms for twin Honeywell TFE731 turbofans.

The Learjet 45 family occupies the light-medium business-jet niche, offering high cruise speed and a 51,000 ft ceiling that supports efficient, long-flight profiles compared with smaller light jets. With twin Honeywell TFE731-20 engines producing about 3,500 lbf each, the type competes with contemporaries in its class for owner-operators and charter operators seeking fast regional capability and relatively compact cabin capacity. Resale and maintenance considerations for a 2000-build airframe such as 45-073 typically focus on engine and avionics updates, structural inspections, and documentation of corporate-operator usage histories when assessing market demand.