# Proposed AD FAA-2021-0547: Airbus SAS Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-21-02
- Products: Airbus
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 19, 2021, 86 FR 37936
- Comments due: September 2, 2021
- Became: [AD 2021-21-02](https://openairdocs.org/ad/2021-21-02)
- Docket: FAA-2021-0547 (https://www.regulations.gov/docket/FAA-2021-0547, where comments are filed)
- Project: MCAI-2021-00574-T
- FR document: 2021-15148
- Official PDF: https://openairdocs.org/files/sha256/d6/a0/d6a0995fd1dade5a95dc39d0f38d1799e85781c3818233723c0e2eb60a3c3628 (from https://www.govinfo.gov/content/pkg/FR-2021-07-19/pdf/2021-15148.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/07/19/2021-15148/airworthiness-directives-airbus-sas-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C7F37CFC90DE9C458625871700773139.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0547

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain 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 determination that repetitive disconnection and reconnection of certain parts manufacturer approval (PMA) nickel-cadmium (Ni-Cd) batteries during airplane parking or storage could lead to a reduction in capacity of those batteries. This proposed AD would require replacing certain PMA Ni-Cd batteries with serviceable Ni-Cd batteries, or maintaining the electrical storage capacity of those PMA Ni-Cd batteries during airplane storage or parking. This proposed AD corresponds to a previously proposed AD on type design Ni-Cd batteries with the same unsafe condition on the same model airplanes. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jul 19, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-15148, comments due Sep 2, 2021 (https://www.federalregister.gov/documents/2021/07/19/2021-15148/airworthiness-directives-airbus-sas-airplanes)

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