N645HA

This airframe, registered as N645HA, is a 1996-built Learjet 31A (serial number 129) manufactured by Learjet Inc. It is recorded as owned by SOUTH 5 PROPERTIES LLC, an LLC based in Lebanon, MO, US, and is operated/registered in the US registry. The aircraft is a fixed-wing, multi-engine business jet configured and maintained to typical Learjet 31A standards; its transfer into the SOUTH 5 PROPERTIES LLC ownership marks the most recent notable registry action on public record. No public valuation data is published for this specific airframe.

The cabin of N645HA reflects the Learjet 31A’s typical executive fit, normally arranged with 6–8 place club seating while retaining certification options for layouts up to 10 occupants by using a belted lavatory seat or divan. Avionics upgrades common to the 31A family are present in this airframe’s configuration, with EFIS-type displays paired with KFC-family autopilot installations typical of 31A modernization efforts. Operational profiles for this airframe emphasize short-to-medium-range business missions within its 1,290 nm range and high-speed cruise capability around 441 kts, often used for point-to-point executive transport and light charter operations based from its home region in Missouri. Maintenance considerations align with twin TFE731 powerplant programs and avionics upgrade cycles customary to late-model 31A airframes.

The Learjet 31A occupies a performance niche for light, high-speed business jets capable of high-altitude cruise to 51,000 ft, competing against other light jets of its era. Demand for this model tends to be driven by buyers seeking compact cabins with strong speed and climb performance rather than maximum cabin volume. Resale and maintenance considerations for Learjet 31A types focus on engine program status for the TFE731 series and the condition/upgrades of EFIS and KFC autopilot installations, which materially affect mission flexibility and marketability.