It's a bad line financial assignment help At a news conference on Sunday, National Transportation Safety Board (NTSB) chief Deborah Hersman said the aircraft's speed was below the planned 137 knots (158mph; 254km/h) as it approached the runway. 必須 2000文字以内 [bbs:youtube:(Youtubeの動画ID)]と書くとYoutubeの動画が貼れます。(例:[bbs:youtube:OQThUAQ0UN0])