What was found
DURING APPROACH, PILOT SELECTED LG TO THE EXTEND POSITION, LG POSITION INDICATORS DID NOT INDICATE LG WAS DOWN & LOCKED. PILOT DECIDED TO MANUALLY EXTEND LG, RECEIVED THREE DOWN & LOCKED INDICATOR LIGHTS, LANDED WITHOUT FURTHER INCIDENT. INSPECTION REVEALED CHAFED HYD LINE IN THE RT NACELLE. REPLACED HYD LINE & PERFORMED OPERATIONAL CHECK OF LG SYS. SYS CHECKS WERE NORMAL.