What was found
(CAN) GAS GENERATOR SN PCE 114020 AND PWR SECTION SN PS 114217 WAS REMOVED SUBSEQUENT TO IN-FLIGHT-SHUT-DOWN DUE TO OIL PRESSURE LOSS IN FLIGHT. THE DATE OF INCIDENT WAS SEPT 7, 2009. AFTER LANDING, THE CHIP DETECTOR AND MAIN OIL FILTER WERE REMOVED AND A LARGE QUANTITY OF METAL DEBRIS WAS OBSERVED IN THE MAIN OIL FILTER AND ON THE CHIP DETECTOR. DURING INVESTIGATION, DISMANTLE OF THE PWR SECTION AND FIRST-STAGE REDUCTION CARRIER ASSY, 3 OF 6 MACHINE HEX BOLTS (IPC PN , CH. 72-10-00, FIGURE 4, ITEM 200, PN MS9490-34) WERE FOUND WITHOUT THE BOLT HEAD ATTACHED. NOTE THAT CARRIER HEX BOLTS SECURE FIRST-STAGE CARRIER AND FIRST-STAGE REDUCTION SPLINED ADAPTER. THERE ARE A QUANTITY OF SIX HEX BOLTS INSTALLED WITH KEYWASHERS AND ARE TORQUED 75 TO 85 IN LB. ENG O/H RECORDS INDICATE THAT QUANTITY SIX BOLTS WERE REPLACED WITH NEW ONES DURING ENGINE O/H.