这是航电试验室内在进行系统验证和测试的C919的飞机“黑匣子”（2月29日摄）。2月29日，记者走进C919国产大飞机的研究基地——中国商飞上海飞机设计研究院，见证该研究院正在进行的C919航电、飞控、液压等各系统试验。C919大型客机是我国首款按照最新国际适航标准研制的干线民用飞机，基本型混合级布局158座，标准航程4075公里，具有完全自主知识产权。该客机于2008年开始研制，计划于2016年首飞。[新华社 裴鑫 摄]
Photo taken on Feb. 29, 2016 shows the black boxes, or flight recorders of C919 plane at the plane's research base in Shanghai Aircraft Design And Research Institute of the Commercial Aircraft Corp. of China (COMAC), in Shanghai, east China. The C919 plane, China's first domestically-produced large passenger aircraft, was developed by the COMAC. C919 has 158 seats, a standard range of 4,075 kilometers and an extended range of 5,555 kilometers. The C919 plane is scheduled to have its maiden flight in 2016. (Xinhua/Pei Xin)