# Proposed AD FAA-2018-0297: Airbus Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2018-23-11
- Products: Airbus
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 17, 2018, 83 FR 16799
- Comments due: June 1, 2018
- Became: [AD 2018-23-11](https://openairdocs.org/ad/2018-23-11)
- Docket: FAA-2018-0297 (https://www.regulations.gov/docket/FAA-2018-0297, where comments are filed)
- FR document: 2018-07637
- Official PDF: https://openairdocs.org/files/sha256/e6/1f/e61f71f7b67fee014aa2edb7105c92748b0bfb296616a330df38c70dd4e21deb (from https://www.govinfo.gov/content/pkg/FR-2018-04-17/pdf/2018-07637.pdf)
- Federal Register: https://www.federalregister.gov/documents/2018/04/17/2018-07637/airworthiness-directives-airbus-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/13A57546CE2D163B86258272004B6BFB.0001
- Page: https://openairdocs.org/proposed/FAA-2018-0297

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A319 series airplanes; Model A320-211, -212, -214, -231, -232, and -233 airplanes; and Model A321-111, -112, -131, -211, - 212, -213, -231, and -232 airplanes. This proposed AD was prompted by investigations that revealed that the cover seal of the brake dual distribution valve (BDDV) was damaged and did not ensure efficient sealing. This proposed AD would require identifying the BDDV part number installed on the airplane, and modifying or replacing BDDVs having certain part numbers. We are proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Apr 17, 2018: Notice of proposed rulemaking (NPRM). (first notice), FR document 2018-07637, comments due Jun 1, 2018 (https://www.federalregister.gov/documents/2018/04/17/2018-07637/airworthiness-directives-airbus-airplanes)

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