# Proposed AD FAA-2021-0028: Airbus SAS Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-09-19
- Products: Airbus
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 24, 2021, 86 FR 11156
- Comments due: April 12, 2021
- Became: [AD 2021-09-19](https://openairdocs.org/ad/2021-09-19)
- Docket: FAA-2021-0028 (https://www.regulations.gov/docket/FAA-2021-0028, where comments are filed)
- Project: MCAI-2020-01516-T
- FR document: 2021-03581
- Official PDF: https://openairdocs.org/files/sha256/2c/fe/2cfe64a9f280499cbe9e823154db5e3a7a691affc3126c4b9e28191887f3acee (from https://www.govinfo.gov/content/pkg/FR-2021-02-24/pdf/2021-03581.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/02/24/2021-03581/airworthiness-directives-airbus-sas-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DCAF0DC1E2287E4F86258686006D65A9.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0028

## Summary

The FAA proposes to adopt 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 proposed 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 proposed AD would require 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 proposed for incorporation by reference. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Feb 24, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-03581, comments due Apr 12, 2021 (https://www.federalregister.gov/documents/2021/02/24/2021-03581/airworthiness-directives-airbus-sas-airplanes)

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