# Proposed AD FAA-2018-0758: Airbus SAS Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2018-23-07
- Products: Airbus
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 16, 2018, 83 FR 40708
- Comments due: October 1, 2018
- Became: [AD 2018-23-07](https://openairdocs.org/ad/2018-23-07)
- Docket: FAA-2018-0758 (https://www.regulations.gov/docket/FAA-2018-0758, where comments are filed)
- FR document: 2018-17646
- Official PDF: https://openairdocs.org/files/sha256/ce/e2/cee2d4c164823dd2d4ef2a21499b7942051c7ea4c5337af65fc26b28744565d5 (from https://www.govinfo.gov/content/pkg/FR-2018-08-16/pdf/2018-17646.pdf)
- Federal Register: https://www.federalregister.gov/documents/2018/08/16/2018-17646/airworthiness-directives-airbus-sas-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8C5598FC20E6F9F4862582EB004A2008.0001
- Page: https://openairdocs.org/proposed/FAA-2018-0758

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Airbus SAS Model A350-941 airplanes. This proposed AD was prompted by a review of the Airbus A350 structure design principles database for type definition that revealed that the balancer fitting part, installed on the tail cone, on a certain frame (FR) has several corrosion-resistant stainless steel nuts that do not meet the requirements for protection against corrosion. This proposed AD would require application of a new additional overcoat sealant and elastic varnish on the affected nuts and fasteners. We are proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Aug 16, 2018: Notice of proposed rulemaking (NPRM). (first notice), FR document 2018-17646, comments due Oct 1, 2018 (https://www.federalregister.gov/documents/2018/08/16/2018-17646/airworthiness-directives-airbus-sas-airplanes)

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