What was found
L/G DID NOT EXTEND WITH GEAR DOWN SELECTED. HYD PUMP RUNNING CONTINUOUSLY. L/G INTRANSIT LIGHT ILLUMINATED. NO 3 GREEN LIGHTS. QRH CHECKLIST COMPLETED TO POINT OF PUMPING. CB F7 DISCOVERED POPPED. RESET CB AND GEAR EXTENDED. HYD PRESS AND QTYS IND NORMAL THROUGHOUT ENTIRE OPERATION. INSPECTED L/G BAYS, NO DISCREPANCIES NOTED. CHECKED CB F7. CB REMAINS SET WITH HYD PUMP SWITCH IN AUTO OR MANUAL. HYD PSI AND ATY CHECK NORM. INSPECTED A/C FOUND SAFE FOR ONE GEAR DOWN (UNPINNED) FERRY FLIGHT FROM PAH TO MEM FOR FURTHER TROUBLESHOOTING/REPAIR TO LANDING GEAR CONTROL. REMOVED AND REPLACED LANDING GEAR CONTROL VALVE PER AMM 32-31-15-4. PN ON AND OFF HP848430-721 SN OFF 2108 SN ON 2111. OPS CHECK GOOD.