What was found
ON DEPARTURE, HKG GEAR RETRACTION NG AND LT MLG SLOW RETRACTION (45 SEC). ARRIVAL ANC GEAR EXTENSION WOULD NOT GO DOWN. LIFTED GEAR HANDLE W/FORCE, EXTENDED GEAR. LANDED UNEVENTFULLY. FOUND FAIRLEAD PULLED OUT OF PRESSURE SEAL AND STUCK TO LANDING GEAR RETRACTION/EXTEND CONTROL CABLE DUE TO EXCESSIVE CORROSION PREVENTATIVE COMPOUND HARDENED AND BALLED UP ON CABLE. CLEANED 4 CABLES, FAIRLEADS AND PRESSURE SEALS ON LANDING GEAR CONTROL CABLES ABOVE RT WHEELWELL LUBED SAME. PERFORMED LANDING GEAR CONTROL EXTENSION/TEST ALL TESTS NORMAL PER MM GEAR HANDLE MOVED FREELY WITH NO BINDING DURING EXTEND OR RETRACT POSITION. RETURNED TO SERVICE.