What was found
CORROSION PITTING REMAINED AT SHANK NUT LOCATION HOLE AT LOCATION 3 OF IPC REAR STUB SHAFT (P/N: KH30620, S/N: RRDSFTEBAP706) AFTER MACHINED TO THE MAXIMUM LIMIT IAW RR ENGINE MANUAL FRSC383. THE PART WAS REJECTED BY RR TV255302 BECAUSE THE REPAIR WOULD AFFECT THE STRUCTURAL INTEGRITY AND SUBSEQUENTLY INITIATE CRACKS ON THE SHANK NUT DURING SWAGING OR ENGINE OPERATION. THE IPC REAR STUB SHAFT (CSN: 2473 SDC) IS RETIRED BEFORE ITS DECLARED LIFE IN TLM (7123 SDC).