Dale Earnhardt Jr. is SERIOUSLY lucky to be alive today ... National Transportation Safety Board officials just announced his plane bounced TWICE on the runway before it eventually crash landed.
Junior, his wife, his 1-year-old daughter and the two pilots on the plane all miraculously survived after their aircraft crashed in Elizabethton, Tennessee on Thursday.
NTSB officials updated media members on some of the details of the accident ... revealing the whole thing was caught on surveillance video -- and it sounded scary as hell.
The lead NTSB investigator, Ralph Hicks, said he could see the plane hit the runway two times before the right landing gear on the aircraft collapsed on the runway.