N21TQ

The airframe bearing tail number N21TQ is a 2016-built Cessna Citation CJ4 (525C), serial 525C0228, manufactured by Textron Aviation Inc.. Since delivery the airframe has been recorded in corporate hands and is owned by ANTAIR SD LLC, a corporation based in Brandon, SD, US; registered in the United States to ANTAIR SD LLC. The aircraft’s certification and serial trace identify it as a typical CJ4 (525C) production example; valuation and condition specifics are not published. Operationally it is listed as a US-registered, fixed-wing multi-engine executive transport operated from the owner’s home base in Brandon, South Dakota.

This specific CJ4 is outfitted in an executive cabin layout featuring a forward divan, a four‑place club, two forward‑facing seats, a belted lavatory and a baggage compartment of approximately 77 cu ft external capacity depending on fit. The avionics fit for the airframe follows the typical CJ4 configuration with Collins Pro Line 21, supporting the aircraft’s role in single-pair-of-pilots corporate operations and high-speed regional missions. With a 10-seat executive interior and long-range capability, typical missions for N21TQ would include transcontinental or multi-leg regional charters, owner-flown business trips, and corporate shuttle duties originating from Brandon, SD. Maintenance considerations align with CJ4 program schedules and Williams FJ44-4A engine inspections and service intervals; specific maintenance status for this airframe is not published.

The Cessna Citation CJ4 (525C) sits in the light-cabin, high-speed segment of corporate jets, offering around 2,165 nm range and a 45,000 ft ceiling that bridge short-haul turbofan efficiency with transregional capability. Competing models in the class include other light-cabin designs that emphasize speed, single-crew capability, and low operating costs; buyer and charter demand tends to favor well-equipped avionics like the Collins Pro Line 21 and proven Williams FJ44 powerplants. Resale and maintenance considerations for this airframe are informed by its 2016 manufacture date, serial identity 525C0228, corporate ownership by ANTAIR SD LLC, and adherence to factory CJ4 configuration and service programs.