airworthiness certificate meaning in English

耐飞行性证明书
适航证明书

An export airworthiness certificate shall be issued if found qualified through examination
经审查合格的，发给出口适航证书。
Article 38 the owner and lessee of a civil aircraft shall use the aircraft in accordance with the scope of use prescribed in airworthiness certificate , conscientiously carry out the maintenance of the aircraft and ensure its airworthiness
第三十八条民用航空器的所有人或者承租人应当按照适航证书规定的使用范围使用民用航空器，做好民用航空器的维修保养工作，保证民用航空器处于适航状态。