EASA AD 26-088
Tail Rotor Drive – Tail Gear Box and Chip Detector – Inspection
EASA Airworthiness Directive Proposal 26-088 is a regulatory document addressing inspection requirements for the tail rotor drive tail gear box (TGB) and chip detector on Leonardo S.p.A. helicopters, specifically models A109AII, A109C, A109E, A109K2, A109LUH, A109S, and AW109SP. The directive targets TGB assemblies with part number 109-0442-01 manufactured by Turbomecanica, requiring repetitive inspections to detect abnormal wear. This directive aims to ensure continued airworthiness and safety of the affected helicopter models.