N403CK

This airframe, registered as N403CK, is a Boeing-built 737-400 (manufacturer designation 737-4Q8) manufactured in 1992 with manufacturer's serial number 26280. The aircraft is configured as an SF freighter and is owned by the Michigan-based corporation Kalitta Charters II, which operates the type for cargo services from its US base. The airframe retains an American registration (US) and has been maintained in a freighter-conversion configuration (main-deck cargo) under the corporate operator's oversight. Ownership and operation by Kalitta Charters II aligns the aircraft with on-demand and scheduled cargo missions typical of the operator's fleet.

The cabin of this specific airframe is a freighter conversion with a main-deck cargo layout, providing straight-forward cargo loading and pallet/Containerized Unit Load Device (CUD) operations. Avionics fit for this airframe is Not published; however, the aircraft operates typical medium-haul freight sectors within a range of approximately 2,060 nautical miles and at cruise speeds near 430 knots, tasks well suited to regional to transcontinental cargo missions. Based in the United States under corporate ownership, the aircraft’s operational profile prioritizes payload and turnaround efficiency; maintenance considerations focus on aging airframe and powerplant support for the CFM56-3C1 engines and freighter-system inspections specific to main-deck conversions. Unique amenities are not applicable to this freighter configuration.

The Boeing 737-400 freighter variant occupies a mid‑size narrowbody cargo niche, balancing payload capacity and operating economics for short- to medium-range routes up to roughly 2,060 nm. Competing types in the market include older 737 Classics and re-engined narrowbodies and converted turbofans in the same segment. Demand among cargo operators favors airframes like N403CK for lower acquisition cost and flexible routing, while resale and maintenance considerations center on remaining structural life, CFM56-3C1 engine support, and freighter conversion integrity.