# Airworthiness Directives; Embraer S.A. Airplanes
> **Rule** · Final rule. · Published 2024-11-27 · Effective 2025-01-02 · 89 FR 93472
## Document
- **Document number:** 2024-27709
- **Category:** airworthiness
- **Manufacturer:** Embraer S.A.
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 89 FR 93472
- **Publication date:** 2024-11-27
- **Effective date:** 2025-01-02
- **FAA docket:** Docket No. FAA-2024-2020
## Abstract

The FAA is superseding Airworthiness Directive (AD) 2023-21-06 for certain Embraer S.A. (Embraer) Model EMB-505 airplanes. AD 2023-21- 06 required installing structural reinforcements on certain monuments and replacing certain floor support rivets. Since the FAA issued AD 2023-21-06, the FAA determined that certain airplanes need to be re- assigned to a different group and certain re-identified floor support part numbers need to be corrected. This AD requires installing structural reinforcements on monuments and replacing fasteners on the floor support, as specified in an Ag[ecirc]ncia Nacional de Avia[ccedil][atilde]o Civil (ANAC) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2024/11/27/2024-27709/airworthiness-directives-embraer-sa-airplanes)
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