What was found
ACFT LEFT C-CHECK AFTER COMPLETE SET LANDING GEAR TIME, DEPARTED. NLG DID NOT LOCK UP, GEAR DOORS DID NOT CLOSE. ACFT WAS PREPPED FOR GEAR DOWN FERRY FLIGHT. FERRY FLIGHT DID NOT OCCUR. DISCREPANCY WAS WORKED AT AIRPORT, ADJUSTMENTS MADE, REF NR 43936. OCF UNSATISFACTORY, NLG WOULD NOT RETRACT AT 170 KTS OR 130KTS, NLG DID RETRACT AT TAKEOFF. DISCREPANCY WAS WORKED ON, NLG ACTUATOR REPLACED, REF NR 43937. OCF SATISFACTORY.