What was found
PHL - FLT 0512 - DURING APPROACH TO PHL WHEN LANDING GEAR EXTENDED, RT MAIN LANDING GEAR FAILED TO EXTEND NORMALLY, RECYCLED LANDING GEAR WITH SAME RESULTS. ACCOMPLISHED MANUAL GEAR EXTENSION IAW ABNORMAL PROCEDURES AND AIRCRAFT LANDED PHL WITHOUT INCIDENT. REPLACED RT MLG SEQUENCE DOOR LOCK ACTUATOR. ACCOMPLISHED LANDING GEAR RETRACTION CHECK WITH NO DEFECTS FOUND. SYSTEM GROUND CHECKED, NORMAL OPERATION. (X)