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United States Department of Transportation United States Department of Transportation

AC 21.17-4 - Type Certification----Powered-lift

Document Information

Number
21.17-4
Title
Type Certification----Powered-lift
Status
Active
Date issued
2025-07-18
Office of Primary Responsibility
AIR-600, Policy and Innovation Division
Description

This advisory circular (AC) provides guidance for the type, production, and airworthiness certification of powered-lift. This AC also designates the airworthiness criteria in appendix A as an acceptable means, but not the only means, of showing compliance with title 14 of the Code of Federal Regulations (14 CFR) 21.17(b) for Federal Aviation Administration (FAA) type certification of certain powered-lift.

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