验证试飞 meaning in English

flight-approval test
proving flight

Following the approval of the relevant manualsmaintenance scheduleflight test schedule and the conducting of inspections of its facilities and route proving flights to ensure its fulfillment of the department s requirements , an aoc was granted to cr airways on march 16
民航处又审批有关的手册维修作业表飞行试验进度表，检查其设施和监察其航线验证试飞，确保该公司符合处方各项要求后，于三月十六日签发航空营运许可证予该公司。