Transportation Department, Federal Aviation Administration
These special conditions are issued for the ZeroAvia, Inc. (Zero Avia) Model ZA601 electric engines. These engines will have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards for aircraft engines. This design feature is an electrical system that will power a mechanical rotating shaft to provide propulsion for airplanes which will be certified separately from the engine. 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.
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-2025-2409; Special Conditions No. 33-031-SC] AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final special conditions. SUMMARY: These special conditions are issued for the ZeroAvia, Inc. (Zero Avia) Model ZA601 electric engines. These engines will have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards for aircraft engines. This design feature is an electrical system that will power a mechanical rotating shaft to provide propulsion for airplanes which will be certified separately from the engine. 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 March 18, 2026. FOR FURTHER INFORMATION CONTACT: Mark Bouyer, Engine and Propulsion Section, AIR-625, Technical Policy Branch, Policy and Standards Division, Aircraft Certification Service, Federal Aviation Administration, 1200 District Ave. Burlington, MA 01803; telephone (781) 238-7755; email Mark.Bouyer@faa.gov . ( printed page 12918) SUPPLEMENTARY INFORMATION: Background On May 3, 2024, ZeroAvia, applied for a type certificate for its Model ZA601 electric engine. The el…
Other Federal Register documents from the same docket.
Citation: 91 FR 12917
