# Airworthiness Directives; Yaborã Indústria Aeronáutica S.A. (Type Certificate Previously Held by Embraer S.A.) Airplanes
> **Rule** · Final rule. · Published 2020-03-20 · Effective 2020-04-24 · 85 FR 15936
## Document
- **Document number:** 2020-05708
- **Category:** airworthiness
- **Manufacturer:** Yaborã Indústria Aeronáutica S.A. (Type Certificate Previously Held by Embraer S.A.)
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 85 FR 15936
- **Publication date:** 2020-03-20
- **Effective date:** 2020-04-24
- **FAA docket:** Docket No. FAA-2019-0975
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain Yabor[atilde] Ind[uacute]stria Aeron[aacute]utica S.A. (Type Certificate Previously Held by Embraer S.A.) Model ERJ 170 airplanes. This AD was prompted by a report of erroneous indications of certain engine parameters and reports of "pitch up" and "pitch down" uncommanded attitudes with autopilot engaged in cruise flight. This AD requires installing updated PRIMUS EPIC LOAD software, as specified in an Ag[ecirc]ncia Nacional de Avia[ccedil][atilde]o Civil (ANAC) Brazilian 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/2020/03/20/2020-05708/airworthiness-directives-yabor-indstria-aeronutica-sa-type-certificate-previously-held-by-embraer-sa)
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