# Airworthiness Directives; Airbus Helicopters
> **Rule** · Final rule; removal; request for comments. · Published 2021-11-12 · Effective 2021-11-12 · 86 FR 62719
## Document
- **Document number:** 2021-24544
- **Category:** airworthiness
- **Manufacturer:** Airbus
- **Type:** Rule
- **Action:** Final rule; removal; request for comments.
- **Citation:** 86 FR 62719
- **Publication date:** 2021-11-12
- **Effective date:** 2021-11-12
- **FAA docket:** Docket No. FAA-2020-1131
## Abstract

The FAA is removing Airworthiness Directive (AD) 2021-05-02, which applied to all Airbus Helicopters Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350C, and AS350D helicopters; Model AS355E, AS355F, AS355F1, AS355F2, AS355N, and AS355NP helicopters; and Model EC130B4 and EC130T2 helicopters. AD 2021-05-02 required determining whether the helicopter has been operated in a severe environment since the last inspection of the main rotor hub-to-mast attachment screws, an inspection of the main rotor hub-to-mast attachment screws if the helicopter has been operated in a severe environment, and replacement of the main rotor hub-to-mast attachment screws if necessary, as specified in a European Aviation Safety Agency (now European Union Aviation Safety Agency) (EASA) AD, which was incorporated by reference. Since the FAA issued AD 2021-05- 02, reported inspection results and further investigation have confirmed that the report of failed main rotor hub-to-mast attachment screws, which prompted AD 2021-05-02, was an isolated case which resulted from a maintenance mistake. Therefore, the FAA has determined that no unsafe condition is likely to exist or develop on the main rotor hub-to-mast attachment screws on other helicopters in the fleet. Accordingly, AD 2021-05-02 is removed.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2021/11/12/2021-24544/airworthiness-directives-airbus-helicopters)
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