What was found
DURING APPROACH UPON SELECTING LANDING GEAR DOWN RECEIVED A GEAR DISAGREE AFTER 5-10 SECONDS BEFORE QRH COMPLIED WITH - LANDING GEAR SHOWED DOWN AND LOCKED, 3 GREEN. LANDED WITH NO ISSUE. (FLT#5052) CLOSED FDR DOWNLOAD INDICATED FLAPS AT 0 AND HYD PUMP 3B IN AUTO CAUSING A DROP IN HYD PRESSURE BELOW 2300 PSI ACTIVATING THE PRIORITY VALVE AND TRIGGERING A DELAY OF MORE THAN 6 SEC AFTER THE GEAR SELECT HANDLED SELECTED DOWN CAUSING A GEAR DISAGREE AND NOSE DOOR OPEN EICAS WARNING. PERFORMED LANDING GEAR DISAGREE TEST IAW AMM. OPS CHECK GOOD. PERFORMED FUNCTIONAL TEST OF EXTENSION AND RETRACTION LANDING GEAR SYSTEM IAW AMM. OPS CHECK GOOD. NO DEFECTS NOTED AT THIS TIME, OK FOR CONTINUED SERVICE.