What was found
PREVIOUS REPORT OF FILIFORM DEBRIS FOUND IN NR 1 ENGINE AFT SUMP MCD SCAVENGE SCREEN. GROUNDED - YES. REMOVED TURBINE REAR FRAME OIL INLET COVER, REF B737-800 AMM TASK 72-56-00-000-802-F00. COMPLETED STEPS 1,2 AND 3 OF TSR. MEASURED LPT SHAFT ASSY SEAL TOOTH OUTER DIA AT 2.077 WITHIN LIMITS, REF AMM 72-55-00-200-801-F00. FOUND DAMAGED FLANGE ASSEMBLY BOLT HOLES CRACKED AND BROKEN OFF. REMOVED AND REPLACED FLANGE ASSEMBLY AND OIL INLET COVER, REF B737-800 AMM 72-56-00-400-801-F00.