The accident investigation is inseparable from professional operations such as interpretation of the black box, on-site investigation, recovery of wreckage, visits to personnel and units, and laboratory testing.

事故调查离不开黑匣子解读、现场勘查、残骸回收、人员单位走访、实验室检测等专业操作。

The director in charge of accident investigations at Iran's Civil Aviation Organization told Tasnim that the flight data recorder will be sent to France if experts could not read it in Kyiv.

伊朗民航组织负责此次事件调查的人在接受Tasnim采访时表示，飞行数据记录器（黑匣子）如果无法在基辅解读的话，就会被送往法国。

Mao Yanfeng, head of the aviation accident investigation center of the CAAC, told at a news briefing on Wednesday that the weather was normal and there were no hazardous weather conditions when the passenger plane crashed.

中国民用航空局（CAAC）航空事故调查中心主任毛延锋在周三的新闻发布会上表示，客机坠毁时天气正常，没有危险的天气条件。