ASTM F3239-19 PDF Download

The ASTM F3239-19 standard provides airworthiness requirements for the design and installation of electric propulsion systems for airplanes. It implicitly addresses hybrid-electric propulsion systems unless explicitly stated otherwise. The standard is primarily focused on electric propulsion systems with conventional system layout, propulsion characteristics, and operation. However, its content may have broader applicability, and it is the responsibility of the applicant to demonstrate and substantiate its broader applicability as a specific means of compliance.

If an applicant intends to propose this standard as a means of compliance for a design approval, they must seek guidance from their respective oversight authority (e.g., published guidance from applicable civil aviation authorities) regarding its acceptable use and application. Information on which oversight authorities have accepted this standard, either in whole or in part, as an acceptable means of compliance to their regulatory requirements can be found on the ASTM Committee F44 web page (www.astm.org/COMMITTEE/F44.htm).