# Proposed AD FAA-2021-0350: Airbus SAS Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-20-08
- Products: Airbus
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 11, 2021, 86 FR 25810
- Comments due: June 25, 2021
- Became: [AD 2021-20-08](https://openairdocs.org/ad/2021-20-08)
- Docket: FAA-2021-0350 (https://www.regulations.gov/docket/FAA-2021-0350, where comments are filed)
- Project: MCAI-2020-01633-T
- FR document: 2021-09876
- Official PDF: https://openairdocs.org/files/sha256/a5/10/a51089fafa09204c4bffa68f61a5702b75f7b2ac8fe34011604924e7de6c9e2c (from https://www.govinfo.gov/content/pkg/FR-2021-05-11/pdf/2021-09876.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/05/11/2021-09876/airworthiness-directives-airbus-sas-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/083DD4C82D432F2B862586D20074C24B.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0350

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus SAS Model A318, A319, A320, A321, A330-200, A330-200 Freighter, A330-300, A330-800, A330-900, A340-200, A340-300, A340-500, A340-600, and A380-800 series airplanes. This proposed AD was prompted by a report that repetitive disconnection and reconnection of certain batteries during airplane parking or storage could lead to a reduction in capacity of those batteries. This proposed AD would require replacing certain nickel-cadmium (Ni-Cd) batteries with serviceable Ni- Cd batteries, or maintaining the electrical storage capacity of those Ni-Cd batteries during airplane storage or parking, 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

- May 11, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-09876, comments due Jun 25, 2021 (https://www.federalregister.gov/documents/2021/05/11/2021-09876/airworthiness-directives-airbus-sas-airplanes)

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