Description
The MS21904J4 is a genuine Textron Aviation elbow supplied for use on the aircraft, with its precise function defined by the aircraft's parts data. It fits the Citation X and Citation X+. It carries an export classification of ECCN 9A991, weighs 0.06 pounds, and measures 1.05 (L) x 1.1 (W) x 0.5 (H) Inches.
Supplied directly by Textron Aviation as an original-equipment (OEM) part, the MS21904J4 meets the manufacturer's specification and keeps the aircraft configuration-correct, with clean traceability in the maintenance records.
Across the Cessna Citation fleet, correctly identified factory parts like this keep every airframe consistent and configuration-correct.
Supplied as a defined part in the manufacturer's catalog, its exact role is set by the aircraft's parts and maintenance data. 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.
Sourcing the OEM part protects the airframe's configuration and keeps its service history consistent, which matters for both airworthiness and resale value. Fitting the correct factory part the first time avoids the rework, removal, and re-inspection that an incorrect or unapproved part can trigger.
Built by Textron Aviation, whose Cessna line was founded in Wichita, Kansas in 1927 and joined Textron in 1992, this part carries one of general aviation's most storied names. The Citation family is the best-selling line of business jets ever built, and more than 7,500 have been delivered worldwide.
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