Airworthiness Directives; De Havilland Aircraft of Canada Limited (Type Certificate Previously Held by Bombardier, Inc.) Airplanes
airworthiness · Rule · Final rule. · Published 2026-06-04 · Effective 2026-07-09 · 91 FR 33584
Document
Document number
2026-11217
Federal Register citation
91 FR 33584
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
De Havilland
Publication date
2026-06-04
Effective date
2026-07-09
FAA docket
Docket No. FAA-2025-2558
Abstract
The FAA is adopting a new airworthiness directive (AD) for all De Havilland Aircraft of Canada Limited Model DHC-8 airplanes. This AD was prompted by reports of cracked barrel nuts at the wing front spar and horizontal stabilizer to vertical stabilizer joint. This AD requires repetitive inspections for cracking and corrosion of the affected barrel nuts and applicable corrective actions. The FAA is issuing this AD to address the unsafe condition on these products.