Home / Standards / GB/T 42856-2023 GB/T 42856-2023 Active Flight test requirements for civil large and medium unmanned helicopter systems flight performance 民用大中型无人直升机系统飞行性能飞行试验要求 Standard Type GBT ICS 49.020 CCS V37 Status 现行 Issue Date 2023-08-06 Implementation 2024-03-01 Responsible Dept 国家标准委 Drafting Unit N/A