# Proposed AD FAA-2020-0338: Airbus SAS Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2020-18-03
- Products: Airbus
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 27, 2020, 85 FR 23262
- Comments due: June 11, 2020
- Became: [AD 2020-18-03](https://openairdocs.org/ad/2020-18-03)
- Docket: FAA-2020-0338 (https://www.regulations.gov/docket/FAA-2020-0338, where comments are filed)
- FR document: 2020-08754
- Official PDF: https://openairdocs.org/files/sha256/36/b7/36b72caa871756d01d2ecf424ace747f508c0e8e16c5b2cec0f217914c2d88b3 (from https://www.govinfo.gov/content/pkg/FR-2020-04-27/pdf/2020-08754.pdf)
- Federal Register: https://www.federalregister.gov/documents/2020/04/27/2020-08754/airworthiness-directives-airbus-sas-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E55DD864B737173B8625855700429B39.0001
- Page: https://openairdocs.org/proposed/FAA-2020-0338

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Airbus SAS Model A350-941 and -1041 airplanes. This proposed AD was prompted by the results of laboratory tests on non- rechargeable lithium batteries installed in certain emergency locator transmitters (ELT), which highlighted a lack of protection against current injections of 28 volts direct current (DC) or 115 volts alternating current (AC) that could lead to thermal runaway and a battery fire. This proposed AD would require modifying a certain ELT by installing a diode between the ELT and the terminal block, as specified in a European Union Aviation Safety Agency (EASA) AD, which will be incorporated by reference. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Apr 27, 2020: Notice of proposed rulemaking (NPRM). (first notice), FR document 2020-08754, comments due Jun 11, 2020 (https://www.federalregister.gov/documents/2020/04/27/2020-08754/airworthiness-directives-airbus-sas-airplanes)

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