EASA AD 2026-0168
Tail Rotor Drive – Tail Gear Box and Chip Detector – Inspection
EASA Airworthiness Directive 2026-0168 is issued for Leonardo S.p.A. A109 series helicopters and AW109SP models, addressing inspection requirements for the tail rotor drive's tail gear box (TGB) and chip detector. This directive applies to all serial numbers of the affected helicopter models equipped with specific Turbomecanica-manufactured TGB case assemblies. The AD mandates repetitive inspections, cleaning, and operational tests to detect abnormal wear and prevent potential failure of the tail gear box.