EE WAS CHANGING A FUEL PUMP ONT HE 9501 PICK UP FULL TANK. HE WAS STANDING IN THE BUCKET ON THE 41328 MUSTANG AND TURNED TO STEP OUT WHEN HE CAUGHT HIS BOOT ONT HE EDGE OF THE BUCKET. HE FELL FACE FIRST INTO THE OIL TANK DRAIN AND THEN FALL TO THE GROUND.