Heavy-lift helicopter qualifies for commercial operation
By Guo Kai | chinadaily.com.cn | Updated:  2017-03-28 17:12
 
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 An AC313 civil helicopter is in test flight at the Lyumeng Airport in Jingdezhen, East China's Jiangxi province, March 24, 2017. [Photo/Chinanews.com]  | 
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