N121KM

This entry covers airframe N121KM, a 1981-built Cessna 550 Citation II with manufacturer serial number 550-0273. The aircraft is recorded as owned by the corporation TUPELO LTD LC of Lake Charles, LA, US, which serves as the known operator/home base for the type-recorded operator. No additional registry transfers, incidents, or notable sales actions are published for this specific airframe in the provided data. The airframe carries a US civil registration and is presented in executive configuration with configuration summaries noting updated avionics.

The cabin of N121KM is outfitted in an executive 8-passenger layout featuring a mid-cabin four-place club and a forward refreshment center, with a belted lavatory aft. Avionics fitted to this airframe as noted in configuration summaries include Avidyne FlightMax EX-500 MFD, dual Garmin GNS-530AW, L3 Landmark TAWS, BFGoodrich TCAS-I (TCAS-791) and Garmin GTX transponder(s). Typical missions for this airframe profile would be short- to medium-range executive transport within the aircraft’s approximately 1,900 nm range at near-400-knot cruise speeds, operating from its reported Lake Charles, Louisiana base. Maintenance considerations for this airframe reflect the twin JT15D turbine engines and systems common to the Citation II fleet, with avionics retrofits noted in configuration summaries that may affect avionics support and upgrades.

The Cessna 550 Citation II occupies the light to lower-medium business jet niche, offering transcontinental short-haul capability with turbofan thrust rated at 2,500 lbf per engine and a typical certified ceiling of 43,000 ft. Competing models in its era and market segment include other light jets that prioritize lower operating cost and runway performance over larger-cabin comfort. For prospective buyers or charter operators, considerations include airframe age (this unit is a 1981 build), lifecycle maintenance of JT15D engines, and the impact of avionics upgrades such as the installed Avidyne and Garmin suites on resale and operational flexibility.