# Airworthiness Directives; Airbus SAS Airplanes
> **Rule** · Final rule. · Published 2021-06-04 · Effective 2021-07-09 · 86 FR 29944
## Document
- **Document number:** 2021-11726
- **Category:** airworthiness
- **Manufacturer:** Airbus SAS
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 86 FR 29944
- **Publication date:** 2021-06-04
- **Effective date:** 2021-07-09
- **FAA docket:** Docket No. FAA-2021-0028
## Abstract

The FAA is adopting a new airworthiness directive (AD) for all Airbus SAS Model A319-171N airplanes, Model A320-271N, -272N, and -273N airplanes, and Model A321-271N, -272N, -271NX, and -272NX airplanes. This AD was prompted by a report indicating that during a full scale fatigue test of the forward engine mounts, premature wear was identified on the forward engine mount shackle assemblies; in addition, during bearing replacement, the bearing lock washer was found broken. This AD requires replacing any forward engine mount shackle assemblies having a certain part number with a serviceable part, and re- identifying the engine mount, or replacing any forward engine mount assemblies having a certain part number, 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/2021/06/04/2021-11726/airworthiness-directives-airbus-sas-airplanes)
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