Heavy-lift helicopter qualifies for commercial operation
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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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] |