NTSB : People aboard experienced twice the normal gravitational acceleration before crash . Aircraft rose past the vertical point before it crashed into ground , FAA report says . Today 's crash in upstate New York killed all 49 aboard plane , one in house . Plane 's de - icing system was turned on 11 minutes after impact , NTSB says .
NTSB : People aboard experienced twice the normal gravitational force before crash . Plane rolled past the vertical point before it crashed into home , NTSB official says . Thursday 's crash in upstate New York killed all 49 aboard plane , one in house . Plane 's de-icing system was turned on 11 minutes after takeoff , NTSB says .