N831US

The airframe bearing tail number N831US is a McDonnell Douglas-built airliner, listed as a McDonnell Douglas MD-83(SF) with manufacturer entry McDonnell Douglas Aircraft Co and build year 1989. The airframe serial is 49791 and it is registered in the US; ownership is recorded to USA JET AIRLINES INC, a corporation based in Belleville, MI, US. The aircraft entered service as a 155-seat passenger configuration and was later converted to an SF freighter layout under the same corporate ownership, reflecting a change in mission profile and registry information tied to its freighter conversion.

Originally outfitted with a 155-seat single-aisle, five-abreast passenger cabin, this airframe was later reconfigured into an SF freighter layout to carry cargo rather than passengers. Avionics fitments are Collins equipment with various reported dual and triple Collins configurations, consistent with operational flexibility for mixed regional and cargo missions. Based in Belleville, Michigan under USA JET AIRLINES INC, the aircraft’s performance envelope—cruise speed of 500 kts and a range of 2,504 nm—supports medium-range freight routes and charter cargo rotations typical of a converted MD-83(SF). Maintenance considerations on this specific airframe reflect the legacy JT8D-219 turbofan installation and the structural changes associated with freighter conversion.

As a member of the MD-80 family converted to an SF freighter, this airframe occupies a medium-range, single-aisle freighter niche characterized by moderate seating-to-cargo conversion capability and proven airframe robustness. The combination of a 155-seat original layout and subsequent freighter conversion speaks to residual demand for cost-effective, converted platforms in cargo operations. Market and maintenance considerations for this specific serial include continued support for older JT8D-219 engines and avionics configurations (Collins dual/triple fitments), factors that influence operating economics and resale prospects for similar converted MD-83(SF) airframes.