N451UP

This article covers the specific airframe bearing tail number N451UP, a Boeing-built freighter delivered in 1995 with manufacturer serial number 27739. The airframe is registered in the US and is owned and operated by United Parcel Service Co, a Louisville, Kentucky–based corporation; its operational history is characterized by service in the UPS fleet without public record of other corporate owners. The airframe is identified as a Boeing 757-24APF conversion dedicated to cargo operations and is valued at approximately $15,000,000 in current assessments. Registered to a single corporate operator in Louisville, KY, the aircraft has remained in line service as a fixed-wing multi-engine freighter.

As a purpose-converted freighter, this Boeing 757-24APF airframe features a cargo cabin and palletized freight arrangement rather than passenger seating; specific internal cargo configuration for N451UP follows UPS standard freighter layouts with reinforced floor and cargo handling systems typical of 757-200PF/APF conversions. Avionics fit on this production-series 1995 airframe typically reflects line-replacement units and mid-life avionics investments consistent with air transport service, supporting transcontinental and regional freight sectors. Typical mission profiles for this aircraft include medium-haul trunk routes within North America and feeder legs into major UPS hubs based out of Louisville, KY, with maintenance cycles aligned to a heavy-cargo operator’s scheduled checks and component life limits.

The Boeing 757-200 freighter variants occupy a niche for operators requiring a narrow-body platform with long range and high payload efficiency relative to earlier generation narrow-bodies. With a range of 2,895 nm and cruise of 458 kts, the 757-24APF competes with converted MD-11 freighters on medium-density routes and newer twin options on economics and avionics. Buyer demand for well-maintained 757 freighters is driven by cargo operators valuing payload-versus-range capability; resale considerations for N451UP include airframe age (1995), engine type (Rolls-Royce RB-211), and remaining structural fatigue life, all factors that influence maintenance cost projections and secondhand market valuation.