What was found
GEAR DISAGREE WARNING MESSAGE WHILE ON FINAL EXTENDING THE LANDING GEAR. ON 6 MILE FINAL MOVED THE LANDING GEAR LEVER TO DOWN AND THE GEAR DID NOT MOVE. COMPLIED WITH THE QRH FOR A GEAR DOWN DISAGREE. CYCLED THE GEAR SEVERAL TIMES ACCORDING TO THE QRH. COMPLETED THE QRH PROCEDURE WITH AN EMERGENCY EXTENSION OF THE LANDING GEAR. FLIGHT 3014. UPON TROUBLESHOOTING, IN REF TO AMM FIM, FOUND B1 CODE 005968 AND B1 007450, GEAR DISAGREE WARNING MESSAGE, JACKED PLANE AND SWUNG LG IN REF TO AMM, VERIFIED NO GEAR MOVEMENT WITH GEAR HANDLE SELECTED IN DOWN POSITION, FOUND MLG SELECTOR VALVE ASSEMBLY TO BE INOP, REMOVED AND REPLACED MLG SELECTOR VALVE ASSEMBLY IN REF TO AMM, SWUNG LG MULTIPLE TIMES AFTER REPLACEMENT, OPS CHECK GOOD AT THIS TIME