What was found
POS - FLT 8109 - ON APPROACH INTO POS, THE NOSE LANDING GEAR WOULD NOT FULLY EXTEND THROUGH NORMAL MEANS. ALTERNATE EXTENSION PROCEDURES WERE USED. FOREIGN MATTER INTERFERED WITH THE CORRECT OPERATION OF THE SYSTEM. CLEANED AND LUBRICATED THE NOSE LANDING GEAR LINKAGES, AND DOOR MECHANISMS, OPERATIONALLY TESTED OK AND RETURNED TO SERVICE. (M)