# Airworthiness Directives; Airbus Helicopters Deutschland GmbH Helicopters
> **Rule** · Final rule; request for comments. · Published 2021-04-23 · Effective 2021-05-10 · 86 FR 21641
## Document
- **Document number:** 2021-08574
- **Category:** airworthiness
- **Manufacturer:** Airbus
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 86 FR 21641
- **Publication date:** 2021-04-23
- **Effective date:** 2021-05-10
- **FAA docket:** Docket No. FAA-2021-0317
## Abstract

The FAA is superseding Airworthiness Directive (AD) 2019-17- 02, which applied to certain Airbus Helicopters Deutschland GmbH (Airbus Helicopters) Model EC135P1, EC135P2, EC135P2+, EC135P3, EC135T1, EC135T2, EC135T2+, and EC135T3 helicopters. AD 2019-17-02 required inspecting certain part-numbered actuators for corrosion, removing them as necessary, and reporting certain information. This new AD continues to require inspecting certain part-numbered actuators, removing them as necessary, and reporting; and extends the compliance time for the initial inspection, expands the applicability, and includes new requirements for repetitive replacement of affected actuators; as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. This AD was prompted by a hard landing of a helicopter and the discovery of a ruptured and displaced tie bar inside the piston of the longitudinal single-axis actuator of the main rotor actuator (MRA). The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2021/04/23/2021-08574/airworthiness-directives-airbus-helicopters-deutschland-gmbh-helicopters)
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