What was found
BWI/SHD - FLT 5116 - FLT DEPARTED, LT ENG OIL PRESS LIGHT ILLUMINATED. PRESS GAUGE DROPPED TO ZERO & ENG STARTED TO SHUT DOWN. FLT CREW MANUALLY SHUT ENG DOWN. CREW DECLARED EMERG & RETND TO BWI, MADE SAFE LANDING. MX DISPATCHED FROM CLT. UPON ARRIVAL IN BWI, EXAMINED ENG & FND OIL LEAK IN NOSE CASE AREA. SEVERAL BOLTS ON NOSE CASE LOOSE & RETORQUED. ENG SERVICED WITH OIL & DRY MOTORING RUN PERFORMED. NO LEAKS FND. ENG OIL RESERVICED & ENG START ATTEMPTED. ENG DID NOT START. GRBOX DRAIN PLUG REMOVED & APPROX 5 GALLONS OF OIL DRAINED FROM GRBOX. T/S REVEALED DRV GEAR FOR SCAVENGE PUMP TURNING ONE-THIRD OF TIME. ENG REMOVED & REPLACED, A/C RETURNED TO SERVICE. ENG SENT TO GARRETT FOR REPAIR.