What was found
AILERON INTERCONNECT CABLES HAVE SIGNS OF CORROSION AT BOTH WING ROOT PULLEYS ON LT AND RT SIDES. ALSO, ALL 4 PULLEYS HAVE RUST DEPOSITS. REMOVED AND REPAIRED BOTH CENTER SECTIONS OF AILERON INTERCONNECT CABLE CIRCUITS PER MM. REMOVED ALL 4 PULLEYS AND CLEANED RUST DEPOSITS. REINSTALLED PULLEYS AND TENSIONED CABLES PER MM. FUNCTION TEST OF DISCONNECT SYSTEM OK. REF: WC 5005.