This authorization attested to the C919 meeting airworthiness requirements for flight testing.

该授权证C919飞行试验的航要求。

Getting an airworthiness certificate is, however, only part of the process needed to begin commercial services.

然而，获得航证书只是开始商业服务所需过的一部分。

At first, however, regulators are expected to grant airworthiness certificates only to flying taxis with pilots on board.

然而，起初，预计监管机构只会向载有飞行员的飞行出租车航证书。

The Civil Aviation Administration of China (CAAC) also said that the qualifications of the crew members and maintenance personnel on duty met the requirements, the plane's airworthiness certificate was valid.

中国民用航空局（CAAC）也表示，值班机组人员和维修人员的资格要求，飞机的航证有效。