NEW : Investigation will likely take a year , NTSB says . Comment: The NTSB has declined to give a preliminary finding of cause , but investigators have said the Boeing 777 came in too low and too slow . No discussion of speed until nine seconds before impact , NTSB says . 911 calls pour in to dispatchers from witnesses and passengers alike .
NEW : Investigation will likely take a year , NTSB says . Comment: No discussion of speed until nine seconds before impact , NTSB says . 911 calls pour in to dispatchers from witnesses and passengers alike .