TURNBUCKLE

The MS21251-B6S is a genuine Textron Aviation turnbuckle supplied for use on the aircraft, with its precise function defined by the aircraft's parts data. It fits the Citation CJ4, CJ4 Gen 2, CJ4 Gen 3 and Citation V, Ultra, Encore or Encore+. It carries an export classification of ECCN EAR99. As an original-equipment (OEM) part supplied directly by Textron Aviation, the MS21251-B6S is built to the aircraft maker's specification and cross-references the type design as documented in the maintenance data. Choosing the genuine part over an unapproved substitute preserves configuration control and simplifies inspection sign-offs. Because the Cessna Citation aircraft share extensive structure and hardware, a single part like this is often common across several variants. This is a cataloged factory part whose form, fit, and function are established by the manufacturer's approved data. Sourcing the OEM part protects the airframe's configuration and keeps its service history consistent, which matters for both airworthiness and resale value. For a regulated aircraft component, correct identification by factory part number is what guarantees the exact form, fit, and function the design calls for. Cessna traces to the company Clyde Cessna founded in Wichita, Kansas in 1927; Textron Inc. acquired it in 1992, and since 2014 it has anchored Textron Aviation alongside Beechcraft and Hawker. Cessna's Citation line, launched with the Model 500 in the early 1970s, grew into the best-selling business-jet family in the world, spanning today from the light M2 to the super-midsize Longitude. To check availability, request a quote for MS21251-B6S or browse more Cessna Citation parts on Flying411.