What was found
PILOT COMPLAINED OF OIL DRIPPING ON HANGAR FLOOR. INSPECTION REVEALED APPROXIMATELY .1250 INCH LONG CRACK IN THE SIDE OF THE OIL TANK. THERE WERE TWO CREASES IN THE TANK RUNNING IN A VERTICAL DIRECTION ON BOTH THE FORE AND AFT SIDE OF THE TANK. THE CRACK ORIGINATED AT THE TOP OF THE FORWARD CREASE. THIS OIL TANK IS PRESSURIZED AND EVEN THIS SMALL TANK CRACK CAUSED A SUBSTANTIAL AMOUNT OF OIL TO BE LOST.