ISO 21384

ISO 21384 is the reference standard for unmanned aircraft systems, and it is worth asking a supplier which parts of it their airframe was designed against. It covers the design and manufacture of the aircraft, the operational procedures around it, the airspace integration work and the performance you should expect in service. A manufacturer that works to ISO 21384 has a documented airworthiness case rather than a set of individual test results, which means the design intent survives the production run instead of being re-established batch by batch. Buyers deploying aircraft for public-safety or critical-infrastructure work find this particularly useful because the standard maps closely to what procurement authorities ask for.