TURNBUCKLE

The MS21251B6S 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 1900 Airliner, 1900C Airliner, 1900D Airliner, Citation CJ1 or CJ1+, Citation CJ2 or CJ2+, Citation CJ3, CJ3+, CJ3+ Gen 2, CJ3 Gen 3, Citation III, VI or VII, and Citation M2, M2 Gen 2, M2 Gen 3. It carries an export classification of ECCN EAR99. Supplied directly by Textron Aviation as an original-equipment (OEM) part, the MS21251B6S meets the manufacturer's specification and keeps the aircraft configuration-correct, with clean traceability in the maintenance records. Because the Beechcraft 1900 and Cessna Citation aircraft share extensive structure and hardware, a single part like this is often common across several variants. As a factory-supplied item for a type-certificated aircraft, this part is defined by the manufacturer's specification and applicability data. On a certificated airframe, part provenance matters as much as the part itself; genuine factory sourcing settles that question up front. Because aircraft parts are governed by strict airworthiness and traceability rules, fitting the OEM part rather than an unapproved equivalent keeps the installation eligible and the aircraft's records clean. These aircraft are built by Textron Aviation, which unites Cessna (founded 1927) and Beechcraft (founded 1932) under one Wichita, Kansas company since 2014. Derived from the King Air, the 19-passenger Beechcraft 1900 airliner (built 1982–2002) remains in service with regional and cargo operators. Request a quote for MS21251B6S or browse more Beechcraft 1900 and Cessna Citation parts on Flying411.