2024-30855

Document Headings Document headings vary by document type but may contain the following: • the agency or agencies that issued and signed a document • the number of the CFR title and the number of each part the document amends, proposes to amend, or is directly related to • the agency docket number / agency internal file number • the RIN which identifies each regulatory action listed in the Unified Agenda of Federal Regulatory and Deregulatory Actions See the Document Drafting Handbook for more details. Department of Transportation Federal Aviation Administration • 14 CFR Part 33 • [Docket No. FAA-2023-0587; Special Conditions No. 33-23-01-SC] ( printed page 105432) AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final special conditions. SUMMARY: These special conditions are issued for the Safran Electric & Power S.A. (Safran) Model ENGINeUS 100A1 electric engines that operate using electrical technology installed on the aircraft for use as an aircraft engine. These engines will have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards applicable to aircraft engines. This 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. These special conditions 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. DATES: Effective January 27, 2025. FOR FURTHER INFORMATION CONTACT: Mark Bouyer, Engine and Propulsion Standards Section, AIR-625, Technical Policy Branch, Policy and Standards Division, Aircraft Certification Service, 1200 District Avenue, Burlington, Massachusetts 01803; telephone (781) 238-7755; mark.bouyer@faa.gov. SUPPLEMENTARY INFORMATION: Background On November 27, 2020, Safran applied for FAA validation for a type certificate for their Model ENGINeUS 100A1 electric engine. The Safran Model ENGINeUS 100A1 electric engine will be used in a single-engine airplane that will be certified separately from the engine. The Safran Model ENGINeUS 100A1 electric engine is comprised of a direct-drive, radial-flux, permanent magnet motor, divided in two sections, each section having a three-phase motor, and one electric power inverter controlling each three-phase motor. Type Certification Basis Under the provisions of 14 CFR 21.17(a)(1), generally, Safran must show that Model ENGINeUS 100A1 electric engines meet the applicable provisions of 14 CFR part 33 in effect on the date of application for a type certificate. If the Administrator finds that the applicable airworthiness regulations ( e.g., part 33) do not contain adequate or appropriate safety standards for the Safran Model ENGINeUS 100A1 electric engines because of a novel or unusual design feature, special conditions may be prescribed under the provisions of § 21.16. Special conditions are initially applicable to the model for which they are issued. Should the type certificate for that model be amended later to include any other engine model that incorporates the same novel or unusual design feature, these special conditions would also apply to the other engine model under § 21.101. The FAA issues special conditions, as defined in § 11.19, in accordance with § 11.38, and they become part of the type certification basis under § 21.17(a)(2). Novel or Unusual Design Features The Safran Model ENGINeUS 100A1 electric engines will incorporate the following novel or unusual design features: An electric motor, motor controller, and high-voltage electrical systems that are used as the primary source of pr…

Fonte: Federal Register (federalregister.gov). Texto original em inglês. Conteúdo sanitizado por segurança.