N399WN

This airframe, registered as N399WN, is a Boeing-built Boeing 737-300 with manufacturer's serial number 27693 and a build year of 1995. It is owned by Coulson Aviation USA, a corporate owner based in the United States, and carries a US registration. The airframe retains its original Southwest-configured single-class interior and is recorded in civil registries under its current corporate ownership; transfer into Coulson Aviation USA is the principal documented ownership change. Valuation and formal condition reporting for this specific airframe are Not published.

The aircraft is fitted with a 143-seat single-class (Y143) cabin layout as it was configured during its service with Southwest Airlines, reflecting a high-density, passenger-transport interior for short- to medium-haul operations. With twin CFM56-3 turbofan powerplants and a published cruise speed of 485 knots, the airframe is typically operated on regional to transcontinental sectors within its 2,255 nm range and up to its service ceiling of 37,000 ft. Registered and operated under a United States corporate owner, maintenance and operational baselines follow U.S. regulatory requirements; specific avionics fit and supplemental mission modifications for this airframe are not published. The aircraft’s single-class cabin and common 737-300 systems imply standard line maintenance considerations for aging-series 737s, including checks on older CFM56-3 engines and structural fatigue monitoring.

The Boeing 737-300 belongs to the Classic-series 737 family, positioned for short- to medium-haul high-density routes and known for economical per-seat operations in its era. Its two CFM56-3 engines and a 143-seat layout place it in direct competition with contemporaneous narrowbodies optimized for high-frequency sector use. In the secondary market, airframes from 1995 face considerations related to age, engine overhaul cycles, and interior refurbishment needs; operators evaluating such airframes weigh remaining range (2,255 nm), payload capacity, and the costs associated with maintaining legacy systems against acquisition price and mission profile.