What was found
NR 1 ENG FAILURE IN FLIGHT DUE TO LOW OIL PRESSURE. RESTART ATTEMPTED WITH NO SUCCESS. VERIFIED OIL LEVEL ON NR 1 ENG AT 90 PERCENT, NO VISABLE OIL LEAKS. DEBRIEF WITH CREW AND SHOW A WINDMILL TIME AT 0911 CENTRAL TIME & WHEELS DOWN AT 1014 CENTRAL. CREW STATED INDICATIONS ON NR 1 STARTED FLUCTUATING & CREW INTIATED. ENG SHUTDOWN, ATTEMPTED RESTART ON DECENT WITHOUT SUCCESS. CREW STATED, UPON RESTART IT WOULDN`T WINDMILL, START SO USING CROSSBLEED THEY WERE ABLE TO RESTART ENG BUT RED LINE NEVER DISAPPEARED DURING NORMAL START SUCCESS AND SHORTLY AFTER, ENGINE FAULT AND IMMEDIATELY SHUTDOWN. CREW NOTED DURING INTIAL PROBLEM ENG INDICATION FLASHING OIL RAPIDLY, FOLLOWED BY RED CAUTION LIGHT. OIL TANK CHIP DETECTOR CONTAINED EXCESSIVE METAL FRAGMENTS, A SUMP OF LUBE UNIT SCREEN WITH METAL FRAGMENT, AGB AND B SUMP IN SCREENS WHERE CLEAN. IAW AMM 79-21-04-211-801-GOO.