What was found
(CAN) SHOP TOOL FOR FILLING O2 SYSTEMS. THE OXYGEN BOOSTER DESCRIBED ABOVE WAS BEING USED TO FILL MEDICAL OXYGEN IN TO THE AIRCRAFT LIFEPORT MEDICAL SLED ON BOARD THE AIRCRAFT, WHEN THE UNIT EXPLODED WITH NO WARNING SENDING A TORCHING FLAME WITH HOT SHRAPNEL APPROXIMATELY 45 FEET ACROSS THE HANGER, HITTING A WALL AND STARTING A SMALL FIRE. LUCKILY THE OPERATOR ESCAPED WITH MINOR BURNS, DUE TO HIS CLOSE PROXIMITY, AND MINOR DAMAGE TO THE HANGAR AREA. QUICK THINKING ON THE PILOTS PART HELPED TO LIMIT THE DAMAGE, BUT IF THIS WAS TO HAPPEN AGAIN, IT COULD CAUSE A LOSS OF LIFE AND OR THE DESTRUCTION OF THE BUILDING AND AIRCRAFT.