What was found
APU OIL CONSUMPTION INSPECTION DUE TO REPORT OF EXCESSIVE SERVICING. ETOPS SIGNIFICANT SYSTEM TASK AFFECTS APU ON DEMAND IN-FLIGHT START CAPABILITY. GROUNDED - YES. REF ITEM 1 OF TSR B737-800 FIM TASK 49-95-00-810-801. REMOVED AND REINSTALLED PORT 1 EGT PROBE REF B737-800 AMM 49-71-21 FOR BORESCOPE INSPECTION. C/W BORESCOPE OF APU EXHAUST DUCT FOR OIL LEAKAGE. FOUND EXCESSIVE OIL AROUND GEARBOX VENT BREATHER. APU REQUIRES REPLACEMENT REF FIM 49-95 TASK 801.