What was found
DURING AN INSPECTION OF ENGINE, DAMAGE TO THRUST REVERSER, HPSOV VALVE & ELECTRICAL WIRE WAS DETECTED. HPSOV ASSY WAS FOUND INCORRECTLY ALIGNED WITH ADJACENT AIR DUCT. LAST MX OF PARTS WERE IDENTIFIED TO BE AN ON-WING INTERVENTION BY LSO ON-WING SUPPORT TEAMS FOR FUEL NOZZLES REPLACEMENT. HPSOV IS PART OF THE QUICK ENGINE CHANGE WHICH IS A BOEING OWN DESIGN. DURING THE FUEL NOZZLES REPLACEMENT, THE HPSOV IS DISSASSEMBLED TO ACCESS TO THE FUEL NOZZLES. AFTER FUEL NOZZLES REPLACEMENT, THE RE-ASSEMBLY OF THE HPSOV MUST BE DONE FOLLOWING AMM PROCEDURE. THE AMM PROCEDURE INCLUDES A SPECIFIC WARNING TO ALIGN THE HPSOV, THE LOWER CDP DUCT AND A COUPLING PART BY ENSURING ALIGNMENT OF ALIGNMENT MARKS.