What was found
PROPELLER WAS INSIDE OF OVERHAUL TIMES. IT WAS LEAKING GREASE. AFTER DISASSEMBLY, THE TEFLON TAPE AROUND THE SHANK THAT THE BLADE SEAL RIDES ON HAD FALLEN OFF; THUS, CAUSING THE LEAK. ALSO, THE BLADE SEAL HAD STARTED CUTTING INTO THE BLADE SHANK. ALSO, NOTICED THERE WAS BAD CORROSION AROUND THE SAME AREA. POSSIBLY CAUSED BY THE GREASE WHICH APPEARED TO BE ONE THAT IS NOT APPROVED BY HARTZELL SB 159A. THE ABOVE CONDITION MAY HAVE RESULTED IN BLADE FAILURE.