# Airworthiness Directives; Embraer S.A. (Type Certificate Previously Held by Yaborã Indústria Aeronáutica S.A.; Embraer S.A.) Airplanes
> **Rule** · Final rule; request for comments. · Published 2024-01-03 · Effective 2024-01-18 · 89 FR 253
## Document
- **Document number:** 2023-28850
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 89 FR 253
- **Publication date:** 2024-01-03
- **Effective date:** 2024-01-18
- **FAA docket:** Docket No. FAA-2023-2399
## Abstract

The FAA is adopting a new airworthiness directive (AD) for all Embraer S.A. Model ERJ 190-300 and -400 airplanes. This AD was prompted by a report that the method for calculating level-off altitude by the computerized airplane flight manual (CAFM), may result in a non- conservative level-off height. This AD requires revising the existing airplane flight manual (AFM) to incorporate new CAFM versions 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/2024/01/03/2023-28850/airworthiness-directives-embraer-sa-type-certificate-previously-held-by-yabor-indstria-aeronutica-sa)
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