TL* THE CONTACT OWNS A 2016 FORD F-150. WHILE THE VEHICLE WAS PARKED AND UNOCCUPIED WITH THE ENGINE RUNNING, THE VEHICLE ACCELERATED INDEPENDENTLY WITHOUT WARNING. WHILE THE GEAR SHIFTER WAS STILL IN THE PARK POSITION, THE VEHICLE CRASHED INTO THE CONTACT'S BOAT. THERE WERE NO INJURIES. THE CONTACT STATED THAT THE GEAR SHIFTER FAILED TO MOVE OUT OF PARK. THE CONTACT POWERED OFF THE ENGINE. THE VEHICLE WAS RESTARTED AND IT OPERATED NORMALLY. THERE WAS NO WARNING INDICATOR ILLUMINATED. THE VEHICLE WAS NOT TAKEN TO A DEALER OR AN INDEPENDENT MECHANIC FOR DIAGNOSTIC TESTING. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 18,000.