# Proposed AD FAA-2020-0337: Airbus SAS Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2020-15-09
- Products: Airbus
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 27, 2020, 85 FR 23255
- Comments due: June 11, 2020
- Became: [AD 2020-15-09](https://openairdocs.org/ad/2020-15-09)
- Docket: FAA-2020-0337 (https://www.regulations.gov/docket/FAA-2020-0337, where comments are filed)
- FR document: 2020-08752
- Official PDF: https://openairdocs.org/files/sha256/7b/23/7b2376d7720bd665f8b3d85403be001340d6c3c8cb7643ff1b0b885199cb8139 (from https://www.govinfo.gov/content/pkg/FR-2020-04-27/pdf/2020-08752.pdf)
- Federal Register: https://www.federalregister.gov/documents/2020/04/27/2020-08752/airworthiness-directives-airbus-sas-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4EE05C63EA83BCBC8625855700429C1E.0001
- Page: https://openairdocs.org/proposed/FAA-2020-0337

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus SAS Model A330-941 airplanes. This proposed AD was prompted by a report that seven spoiler servo-controls (SSCs) lost hydraulic locking function due to a sheared seal on the blocking valve. This proposed AD would require repetitive operational tests of the hydraulic locking function on each SSC and replacement if necessary, 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 2020-08752, comments due Jun 11, 2020 (https://www.federalregister.gov/documents/2020/04/27/2020-08752/airworthiness-directives-airbus-sas-airplanes)

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