FAA AD: De Havilland DHC-8 Barrel Nut Cracks Require Repetitive Inspections
If you fly or maintain DHC-8s, this hits your maintenance program directly with no grandfathering or fleet exemptions. Plan for hangar time and parts availability.
The FAA issued a final-rule airworthiness directive for all De Havilland DHC-8 airplanes after reports of cracked barrel nuts at the wing front spar and at the horizontal-to-vertical stabilizer joint. The AD requires repetitive inspections for cracking and corrosion of the affected barrel nuts, with corrective action if discrepancies are found. It applies fleet-wide with no terminating action, so operators must build the repetitive inspections into their continuing airworthiness programs. The DHC-8 remains a workhorse in regional and cargo operations, and this is the kind of structural fatigue issue that surfaces as fleets age. Published in the Federal Register June 4, 2026; effective July 9, 2026 (AD 2026-11-03).
Sources
- Airworthiness Directives; De Havilland Aircraft of Canada Limited Airplanes — Federal Register