BEARING

The MS21428-39 is a genuine Textron Aviation bearing that supports rotational or pivoting motion within a mechanism. It is fitted to the 1900D Airliner, King Air 350 Fusion, King Air 350C FM-36 & On, King Air 350C Fusion, King Air 350i, King Air 360, King Air 360C, and Super King Air 350. It carries an export classification of ECCN 9A991, weighs 0.04 pounds, and measures 1.15 (L) x 1.15 (W) x 0.35 (H) Inches. Because the MS21428-39 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. Across the Beechcraft 1900 and King Air fleet, correctly identified factory parts like this keep every airframe consistent and configuration-correct. A bearing or bushing sets how a shaft or pivot moves and wears; the right part keeps that motion as designed. 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. Choosing the genuine article over an unapproved part keeps mechanics' sign-offs clean and the aircraft's configuration exactly as certificated. Beechcraft, founded in Wichita, Kansas in 1932, joined Cessna and Hawker under Textron Aviation in 2014, which today supports the worldwide Beechcraft fleet with genuine factory parts. 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 MS21428-39 or browse more Beechcraft 1900 and King Air parts on Flying411.