Description
The MS21916J4-2 is a genuine Textron Aviation reducer supplied for use on the aircraft, with its precise function defined by the aircraft's parts data. It is applicable to the Citation X and Citation X+. It carries an export classification of ECCN EAR99.
As an original-equipment (OEM) part supplied directly by Textron Aviation, the MS21916J4-2 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.
As a factory-supplied item for a type-certificated aircraft, this part is defined by the manufacturer's specification and applicability data. Sourcing the OEM part protects the airframe's configuration and keeps its service history consistent, which matters for both airworthiness and resale value.
On a certificated airframe, part provenance matters as much as the part itself; genuine factory sourcing settles that question up front.
The Cessna name is among the most recognized in aviation — founded in Wichita, Kansas in 1927 and part of Textron since 1992, today a cornerstone of Textron Aviation. 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.
Request a quote for MS21916J4-2, or browse more Cessna Citation parts on Flying411.
