What was found
NOSE GEAR DID NOT EXTEND ON FIRST ATTEMPT. ON SECOND ATTEMPT IT EXTENDED NORMALLY. INSPECTED AIRCRAFT, PINNED GEAR AND PERFORMED MX FERRY FLIGHT IAW MIDWAY AIRLINES GMM CHAPTER 6 SECTION 4 FROM TPA TO RDU. REMOVED AND REPLACED NLG DOOR SEQUENCING VALVE AND NLG DOOR SELECTOR VALVE IAW F-100 AMM 32-32-10 AND 32-32-11. ALSO, REPLACED NLG DOOR ACTUATOR FOR MINOR LEAKAGE IAW F-100 AMM 32-32-16. CLEANED IN LINE SCREEN FILTER BETWEEN NLG DOOR SELECTOR AND SEQUENCING VALVE. LANDING GEAR OPS TEST AND LEAK CHECK GOOD.