N578TR

This airframe, registered N578TR, is a Boeing 737-300 (designated 737-3T0(SF)) built in 1987 with manufacturer serial number 23578. It is owned by Career Aviation Co Inc (a corporation) based in Wilmington, DE, US, and bears a United States registration (US). The airframe has been configured as a main-deck freighter through a supplemental freight (SF) conversion and is notable within its operator record for its dedicated freighter/combi role; valuation and detailed condition records are not published.

The cabin of this specific 737-300 is a freighter layout achieved via an SF main-deck cargo conversion, yielding a combi/freighter mission profile rather than a passenger configuration. Typical operations for this airframe center on short- to medium-haul cargo services that take advantage of its advertised 2,255 nm range and robust CFM56-3 thrust rating to maintain schedule reliability on regional express lanes. As an aircraft registered and operated from the United States, routine maintenance follows regional civil aviation standards for converted passenger-to-freighter Boeing 737 Classics; specific avionics fit and supplementary equipment lists for this airframe are not published. Service and inspection cycles are influenced by freighter role considerations, such as main-deck cargo loading gear and reinforced floor structures.

The Boeing 737-300 variant, represented here by serial 23578, occupies the lower-capacity end of the Classic 737 family, offering an operational cruise speed around 430 kts and a service ceiling near 37,000 ft, making it suited for regional to transcontinental freight tasks. Competing in the market against older narrowbodies and converted turbofan types, the 737-300(SF) appeals to operators seeking a balance of payload, range, and commonality with larger 737 fleets. Maintenance and resale considerations for this airframe hinge on its freighter conversion status, the lifecycle of its CFM56-3 engines, and the availability of parts and refurbished components for Classic-series airframes.