SWITCH

The MS24660-21A is a genuine Textron Aviation switch that controls an electrical circuit aboard the aircraft. It is fitted to the 1900C Airliner, 1900D Airliner, and Citation Excel, XLS, XLS+, XLS Gen 2. It carries an export classification of ECCN 9A991. Because the MS24660-21A is an original-equipment (OEM) part sourced directly from Textron Aviation, it matches the exact specification and placement called out in the aircraft's type design and maintenance data — assurance a generic substitute cannot offer. Because the Beechcraft 1900 and Cessna Citation aircraft share extensive structure and hardware, a single part like this is often common across several variants. In an aircraft's electrical system, using the correct component preserves the circuit's designed behavior, reliability, and safety. 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. Because substitutions on type-certificated aircraft require approved data, the genuine part is the straightforward, compliant choice for this application. Fitting the correct factory part the first time avoids the rework, removal, and re-inspection that an incorrect or unapproved part can trigger. 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 MS24660-21A, or browse more Beechcraft 1900 and Cessna Citation parts on Flying411.