Description
The MS21920-20 is a genuine Textron Aviation clamp used to fasten, secure, or retain components during assembly of the airframe. It is applicable to the Citation Sovereign or Sovereign+, Citation X, and Citation X+. It carries an export classification of ECCN EAR99, weighs 0.10 lbs, and measures 2.9 (L) x 2.5 (W) x 0.75 (H) in.
As an original-equipment (OEM) part supplied directly by Textron Aviation, the MS21920-20 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.
Parts like this are shared across the Cessna Citation aircraft, reflecting how much structure and hardware these models have in common.
Aircraft hardware is called out to a specific specification for each location; an off-the-shelf equivalent is rarely acceptable. For a regulated aircraft component, correct identification by factory part number is what guarantees the exact form, fit, and function the design calls for.
On a certificated airframe, part provenance matters as much as the part itself; genuine factory sourcing settles that question up front.
Cessna traces to the company Clyde Cessna founded in Wichita, Kansas in 1927; Textron Inc. acquired it in 1992, and since 2014 it has anchored Textron Aviation alongside Beechcraft and Hawker. 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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