What was found
NR 2 ENGINE CORE FIRE LOOP MW0326 BINDING WITH HPTACC DUCTING ON THE INBOARD SIDE. GOUGE PRESENT LOCATED ABOUT 12 INCHES AFT OF HPTACC VALVE. ACFT GROUNDED. REMOVED DAMAGED LPT DUCT FROM NR 2 ENGINE, IAW AMM 75-22-04-000-802-F00 STEPS 2.G.2.(A)-(D) & (3)(B)-(J). STARTED INSTALLATION OF NEW LPT DUCT ON NR 2 ENGINE, IAW AMM 75-22-04-400-802-F00 AND COMPLETED STEPS 3.G.(3)(A)-(G). COMPLETED INSTALLATION OF LPT DUCT, IAW AMM 75-22-04-400-802-F00 STEP 3.G.(3)(H) - 3.G.(4)(I).