# Proposed AD FAA-2026-8791: Embraer S.A. Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Comment period closed
- Products: Embraer EMB-545 and EMB-550
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 28, 2026, 91 FR 55503
- Comments due: October 13, 2026
- Docket: FAA-2026-8791 (https://www.regulations.gov/docket/FAA-2026-8791, where comments are filed)
- Project: MCAI-2026-00076-T
- FR document: 2026-17609
- Official PDF: https://openairdocs.org/files/sha256/1f/fb/1ffbced94f85ae662bf74a125bf5b94c41f9f6dd6a48f9347516f6b42c95b75c (from https://www.govinfo.gov/content/pkg/FR-2026-08-28/pdf/2026-17609.pdf)
- Federal Register: https://www.federalregister.gov/documents/2026/08/28/2026-17609/airworthiness-directives-embraer-sa-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2026-17609-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2026-8791

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Embraer S.A. Model EMB-545 and EMB-550 airplanes. This proposed AD was prompted by the possibility of the Ram Air Turbine (RAT) compartment door seal peeling off and becoming entangled with the RAT rotor. This proposed AD would require replacement of the RAT compartment door seal. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Aug 28, 2026: Notice of proposed rulemaking (NPRM). (first notice), FR document 2026-17609, comments due Oct 13, 2026 (https://www.federalregister.gov/documents/2026/08/28/2026-17609/airworthiness-directives-embraer-sa-airplanes)

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