# Proposed AD FAA-2018-0589: Airbus SAS Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2018-23-03
- Products: Airbus
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 10, 2018, 83 FR 31911
- Comments due: August 24, 2018
- Became: [AD 2018-23-03](https://openairdocs.org/ad/2018-23-03)
- Docket: FAA-2018-0589 (https://www.regulations.gov/docket/FAA-2018-0589, where comments are filed)
- FR document: 2018-14694
- Official PDF: https://openairdocs.org/files/sha256/a6/1a/a61ac0f038f527c6c7f54d5ad71afe7fa017215ba9783a37cafc7fba6e29fbe7 (from https://www.govinfo.gov/content/pkg/FR-2018-07-10/pdf/2018-14694.pdf)
- Federal Register: https://www.federalregister.gov/documents/2018/07/10/2018-14694/airworthiness-directives-airbus-sas-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/239AADF8F58ED000862582C6004BBC9A.0001
- Page: https://openairdocs.org/proposed/FAA-2018-0589

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Airbus SAS Model A318 and 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 reports of false resolution advisories (RAs) from certain traffic collision avoidance systems (TCASs). This proposed AD would require modification or replacement of certain TCAS processors. We are proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jul 10, 2018: Notice of proposed rulemaking (NPRM). (first notice), FR document 2018-14694, comments due Aug 24, 2018 (https://www.federalregister.gov/documents/2018/07/10/2018-14694/airworthiness-directives-airbus-sas-airplanes)

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