What was found
(CAN) ON LDG LT ENGINE OIL PRESSURE FLUCTUATED FROM 10-50 LBS & OIL LOW PRESSURE WARNING LAMP FLASHED ON ONCE, CREW SHUTDOWN ENGINE & TAXIED TO HANGAR. MAINT FOUND LARGE AMOUNT OF OIL ON INTERNAL SIDE OF COWLINGS. TROUBLESHOOTING REVEALED OIL L EVEL DOWN 3 QTS. OIL FILTER PULLED & INSP, LARGE AMOUNT OF CARBON FOUND INSIDE.CONTACTED HALE A/C, ENGINE OVERHAUL FACILITY WHICH HAD COMPLETED 2000 HR HSI ON ENGINE 15 HRS PIOR TO OCCURRENCE. HALE SENT 2 (2) ENGINE FIELD TECHN ICIANS TO REPL NR 1 CARBON SEAL.AFTER FURTHER INVEST., SCAVENGE PUMP FOUND TO BE LEAKING. WHEN COVER OF PUMP REMVD, METAL (MAGNETIC) FOUND INSIDE. ENGINE SENT BACK TO HALE FOR FURTHER INVEST. & REPAIR. FOLLOWUP RPT TO COME AT LATER DATE.2000