Superseded. This AD was superseded by AD 2025-24-04. Verify which one applies to your serial and effectivity before any maintenance action.
AD 2021-20-16
Effective 11/22/2021 · Published 10/18/2021
Airworthiness Directives; Airbus Helicopters
Summary
The FAA is superseding Airworthiness Directive (AD) 2021-04- 15, which applied to all Airbus Helicopters Model AS355E, AS355F, AS355F1, AS355F2, AS355N, and AS355NP helicopters; and certain Model AS350B3 helicopters. AD 2021-04-15 required repetitive visual inspections of the right-hand side of the vertical fin spar for discrepancies (cracking), and corrective action if necessary. This AD retains the requirements of…