Special Conditions: Safran Electric & Power S.A. ENGINeTM US100 Series Electric Engines

Final Rule Final · effective Published 2026-01-27 Effective 2026-01-27 91 FR 3360 View on federalregister.gov ↗

Affects · Manufacturers · 14 CFR 33

Abstract

This action amends the applicability of special conditions that were issued for the Safran Electric & Power S.A. Model ENGINe US100A1 electric engines. These engines have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards applicable to aircraft engines. The design feature is the use of an electric motor, motor controller, and high- voltage systems as the primary source of propulsion for an aircraft. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. This action amends the applicability of Special Conditions No. 33-23-01-SC, dated December 27, 2024, which contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards, to include the ENGINe US100 series electric engines.

Full text

13 paragraphs · 248 words.

[Federal Register Volume 91, Number 17 (Tuesday, January 27, 2026)] [Rules and Regulations] [Pages 3360-3372] From the Federal Register Online via the Government Publishing Office [www.gpo.gov] [FR Doc No: 2026-01642]

-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 33

[Docket No. FAA-2023-0587; Special Conditions No. 33-030A-SC]

Special Conditions: Safran Electric & Power S.A. ENGINe\TM\ US100 Series Electric Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final special conditions, amendment.

-----------------------------------------------------------------------

SUMMARY: This action amends the applicability of special conditions that were issued for the Safran Electric & Power S.A. Model ENGINe US100A1 electric engines. These engines have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards applicable to aircraft engines. The design feature is the use of an electric motor, motor controller, and high- voltage systems as the primary source of propulsion for an aircraft. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. This action amends the applicability of Special Conditions No. 33-23-01-SC, dated December 27, 2024, which contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards, to include the ENGINe US100 series electric engines.

DATES: Effective January 27, 2026.

FOR FURTHER INFORMATION CONTACT: Mark Bouyer, Engine & Propulsion Standards Section, AIR-625, Technical Policy Branch, Policy & Standards Division, Aircraft Certification Service, 1200 District Avenue, Burlington, Massachusetts 01803; telephone (781) 238-7755; [email protected].

Verbatim from the Federal Register. The agency's published document is the authoritative source. federalregister.gov ↗