日本支线客机MRJ失败的技术细节。日本的适航审批规则，与美国FAA几乎一模一样。日本MRJ送去FAA，被告知要改九百多处

https://www.hk01.com/%E5%8D%B3%E6%99%82%E5%9C%8B%E9%9A%9B/903412/%E4%B8%AD%E5%9C%8Bc919%E6%88%90%E5%8A%9F%E4%BA%86-%E6%97%A5%E6%9C%ACmrj%E5%8D%BB%E5%A4%A2%E7%A2%8E%E4%BA%86-%E6%97%A5%E6%9C%AC%E7%B6%B2%E6%B0%91-%E7%82%BA%E4%BB%80%E9%BA%BC