What was found
INSPECTION INSTRUCTIONS FOR REPORT OF EXCESSIVE OIL LEAKING FROM FROM #1 ENGINE AFT SUMP DRAIN. OIL CONSUMPTION IS ELEVATED. GROUNDED - YES. REMVD OIL INLET COVER REF B737-800 AMM 72-56-00 AND ACCOMP STEP 5 OF TSR REF AMM 72-55-00-200-801 F00. LOW PRESSURE TURBINE SHAFT ASSY INSP. SHAFT IS W/IN LIMITS REF ASA LOG PAGE 60142696 FOR ALL PRIOR WORK ACCOMP ON AMM TASK 79-00-00-200-806-F01. ACCOMP STEPS 2.3 AND 4 OF THIS TSR. PERFORMED IDLE POWER LEAK CHECK TEST 3A AMM TASK 71-00-00-700-801-F00. AFTER OPENING T/R'S FOUND LARGE AMOUNT OF OIL. TEST FAILED, OIL FOUND BELOW THE TURBINE REAR FRAME DRAIN PORT. THIS CLEARS TSR712247 FURTHER T/S ON TSR712254. REMVD & REPLCD #1 ENG LUBE UNIT REF AMM 79-21-01. LEAK CHECK GOOD. FAN & T/R COWLS CLEAN.