What was found
DURING ENGINE INSTALLATION OPERATOR REPORTED OIL LEAK FROM THE TORQUE TRANSDUCER BOSS ON REDUCTION GEARBOX (RGB) HSG. REPAIR STATION INVESTIGATION REVEALED MISSING OIL SLEEVE ADAPTER (PN 3103335-01, POST SB 13164) ON THE RGB TRANSDUCER BOSS. THE ADAPTER SERVES AS A SEALING SURFACE FOR THE TRANSDUCER O-RING. INVESTIGATION SUGGESTS ADAPTER BECAME DISLODGED DURING A CLEANING OR MX PROCESS. REPORTING REPAIR STATION IS COORDINATING WITH MFG, A REVIEW OF THE SB RGB MODIFICATION (SB 13164) AND ANY ASSOCIATED MX PROCESSES THAT COULD LEAD TO THE DISLODGING OF THE ADAPTER.