Transport Canada — Airworthiness Directive (CAWIS)
Transport Canada — Airworthiness Directive (CAWIS) 2026-15-17: Main rotor gearbox - detect and correct a fatigue crack in the mrs - inspection. Applies to Sikorsky Aircraft Corporation Model S-61A, S-61D, S-61E, S-61V, S-61L, S-61N…. Rotor Drive(s) (ATA 63). Issued 28 Jul 2026.
Sources: EASA, FAA, Transport Canada and the UK CAA — official safety advisories and notices, linked to the issuing authority. Informational only; consult the original document for current requirements.
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