Airworthiness Directives; Airbus Canada Limited Partnership (Type Certificate Previously Held by C Series Aircraft Limited Partnership (CSALP); Bombardier, Inc.) Airplanes
airworthiness · Rule · Final rule. · Published 2026-05-27 · Effective 2026-07-01 · 91 FR 31341
Document
Document number
2026-10486
Federal Register citation
91 FR 31341
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Airbus Canada Limited Partnership (Type Certificate Previously Held by C Series
Publication date
2026-05-27
Effective date
2026-07-01
FAA docket
Docket No. FAA-2025-2543
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain Airbus Canada Limited Partnership Model BD-500-1A10 and BD-500- 1A11 airplanes. This AD was prompted by the discovery that titanium fasteners had been incorrectly installed in the butt strap at the outer wing box lower skin to center wing box interface in lieu of the correct nickel alloy fasteners. This AD requires the identification of fasteners installed in the butt strap at the outer wing box lower skin to center wing box interface, and applicable on-condition actions. The FAA is issuing this AD to address the unsafe condition on these products.