Or more accurately make contact with Terra-firma in an unplanned and uncontrolled way. It will still maintain some contact with air throughout the process. Just like notwithstanding Amtrak's idiotic statement, the train continues to keep in contact with the track preventing other trains from using same.
Ok, so the memo must have said "derailment" is out, "lost contact with the tracks" is now to be used.
Lost contact with rail might be more accurate. They'd have to take a mighty leap to lose contact with track, and it would be way uglier than this one is.