NEW : `` Too early to conclude pilot error , '' NTSB chief says . `` It 's not unusual for crew to change aircraft types , '' she said . The agency is also looking to see if the plane 's computer was handling landing . Monday marked the pilot 's ninth time landing a NTSB 777s at the California airport .
NEW : `` Too early to conclude pilot error , '' NTSB chief says . The agency is also looking to see if the plane 's computer was handling landing . Monday marked the pilot 's ninth time landing a NTSB 777s at the California airport .