What was found
DURING POST FLIGHT INSPECTIONS, THE RT THRUST REVERSER PRESSURE HYDRAULIC LINE WAS FOUND TO BE CHAFED BY NEARBY B-NUT CAUSING A HYDRAULIC LEAK. . THE LOCATION OF THE CHAFED HYDRAULIC LINE WAS WITHIN THE AFT MAINTENANCE BAY ON THE RT SIDE OF THE COMPARTMENT JUST ABOVE AND AFT OF THE WATER SEPARATOR. THE B-NUT WAS LOCATED AFT OF A CHECK-VALVE THE CHAFED HYDRAULIC LINE ROUTES VERTICALLY AFT OF THE WATER SEPARATOR. THE AREA CHAFED IS NOT READILY SEEN AND COULD BE MISSED DURING VISUAL INSPECTION. THE HYD LINE WAS REPLACED AND ADJUSTMENTS WERE MADE TO ACHIEVE CLEARANCE.