# Airworthiness Directives; Airbus Helicopters
> **Rule** · Final rule; request for comments. · Published 2021-03-10 · Effective 2021-03-25 · 86 FR 13637
## Document
- **Document number:** 2021-04869
- **Category:** airworthiness
- **Manufacturer:** Airbus
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 86 FR 13637
- **Publication date:** 2021-03-10
- **Effective date:** 2021-03-25
- **FAA docket:** Docket No. FAA-2021-0096
## Abstract

The FAA is superseding Airworthiness Directive (AD) 2020-23- 02, which applied to all Airbus Helicopters Model EC225LP helicopters. AD 2020-23-02 required repetitive inspections of the bearing in the swashplate assembly of the main rotor mast assembly for discrepancies (ceramic balls that have a hard point or sensitive axial play or both) and, depending on the findings, replacement of an affected main rotor mast assembly with a serviceable main rotor mast assembly. Since the FAA issued AD 2020-23-02, the FAA has determined additional main rotor mast assemblies are affected by the unsafe condition. This AD continues to require the actions specified in AD 2020-23-02, and also includes additional affected main rotor mast assemblies; as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2021/03/10/2021-04869/airworthiness-directives-airbus-helicopters)
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