What was found
EN ROUTE, ISOLATION VALVE (REVERSE) ILLUMINATED. FOLLOWED QRH. NO ACTION REQUIRED. UPON LANDING GEAR DOWN RESULTED IN THREE LARGE NOISES AS EACH GEAR REACHED LOCKED POSITION. FOUND NOSE GEAR SERVICE FITTING DAMAGED. REPLACED FITTING, SERVICED, RETRACTED GEAR PER MM. PERFORMED THRUST REVERSER SYS TEST PER MM. OPS CKD GOOD PER MM.