DOUBLER ASSEMBLY

The 390-110521-0014 is a genuine Textron Aviation doubler assembly — a reinforcing plate that locally strengthens an area of skin or structure. It is fitted to the Premier Model 390. As an original-equipment (OEM) structural part supplied directly by Textron Aviation, the 390-110521-0014 is manufactured to the aircraft maker's specification for material, dimensions, and finish, and cross-references the type design exactly as documented in the maintenance data. For a structural member, the genuine correctly identified part preserves the engineered load paths and keeps the airframe configuration-correct. Because the Beechcraft Premier aircraft share extensive structure and hardware, a single part like this is often common across several variants. As a load-bearing element, a part in this role must match the original material and dimensions precisely to keep the airframe's engineered strength intact. Traceable OEM hardware keeps an aircraft's maintenance records defensible at annual, pre-purchase, and pre-buy inspections. For a regulated aircraft component, correct identification by factory part number is what guarantees the exact form, fit, and function the design calls for. The factory part is built to the manufacturer's material and dimensional specification, so it installs as designed without the surprises a generic equivalent can bring. Built by Beechcraft — the Wichita, Kansas manufacturer founded in 1932 and part of Textron Aviation since 2014 — this part carries a name long associated with rugged, capable aircraft. The Beechcraft Premier I was a clean-sheet, composite-fuselage light jet — the first jet Beechcraft designed in-house — supported today through Textron Aviation. To check availability, request a quote for 390-110521-0014 or browse more Beechcraft Premier parts on Flying411.