1.1 Applicability: 

1.2 Civil Aviation Authorities—CAAs may accept a specific revision of this specification as an acceptable MoC to their requirements. Acceptance and applicability as an MoC to the CAA’s airworthiness rules remains the decision of the respective CAAs. CAAs may accept this specification, with or without limitations as defined in their specification acceptance document. For information on which CAAs have accepted these standards (in whole or in part) as an acceptable MoC to their Rules, refer to the ASTM Committee F44 (General Aviation), ASTM Committee F38 (Unmanned Aerial Systems) or ASTM Committee F39 (Aircraft Systems) webpages (www.astm.org/COMMITTEE/F44.htm, www.astm.org/COMMITTEE/F38.htm, www.astm.org/COMMITTEE/F39.htm), which include CAA website links.

1.3 Applicant Responsibility—The applicant must seek individual guidance from their respective CAA concerning the use of this specification and any referenced Specifications, Practices, Test Methods, or Guides to show compliance to the CAA rules. Alternatively, an applicant may propose an MoC other than those included in this specification, but it is their responsibility to obtain acceptance of their proposed MoC from their CAA.

1.4 This specification is based heavily on the ASTM Committee F44 General Aviation means of compliance guidelines. Unmanned Aircraft System specific guidance is provided below for areas where considerations specific to the unmanned application of aircraft differs from traditional manned aircraft specification or certification requirements. ASTM F3264–18b, Standard Specification for Normal Category Aeroplanes Certification, from the Committee F44 General Aviation group was used as the starting point with referenced ASTM F44 MoC Specification referenced throughout. The referenced F44 standard is to be used as is except in the areas where UAS-specific changes to standard MoC practices have been identified. These changes are identified in the following manner:

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.