RedactedNarrative: On the above date and time the above individual was operating the above described vessel.  While attempting to start the vessel the vessel exploded propelling the operator into the air and off of the vessel.  The vessel had been operated last, three weeks prior with no incidents.  The victim was transported by air to UT medical center to be treated for a broken femur, burns, and head and back injuries.  The vessel was examined with no determination able to be made as to the cause of the explosion.