Data / Federal rules / 2026-05281
Special Conditions: ZeroAvia, Inc. Model ZA601 Electric Engines
The Federal Aviation Administration published this final rule in the Federal Register on March 18, 2026. It took effect on March 18, 2026.
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What the agency says
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.
Key facts
- Document number
- 2026-05281
- Type
- Final rule
- Action
- Final special conditions
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- March 18, 2026
- Takes effect
- March 18, 2026
- Dates
- Effective March 18, 2026.
- Docket
- Docket No. FAA-2025-2409; Special Conditions No. 33-031-SC
- Code of Federal Regulations
- 14 CFR 33
- Topics
- Aircraft; Aviation safety; Reporting and recordkeeping requirements
- Pages
- 13
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Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.