What was found
UPON T/O RECEIVED GEAR DISAGREE WARNING MESSAGE AFTER SELECTING GEAR UP, AIR SPEED GEAR UP SELECTION WAS 170 KNOTS, MAIN LANDING GEAR SHOWED UP NO NLG SHOWED YELLOW HASH MARKS 20 SECONDS AFTER GEAR UP SELECTION NOSE GEAR HASH MARKS TURNED RED THEN RECEIVED GEAR DISAGREE WARNING. BLK 3 C/W QRH, WHICH REQUIRES EMERGENCY LANDING GEAR EXTENSION HANDLE TO BE PULLED. AT COMPLETION OF QRH HANDLE IS TO BE RE-STOWED, WE WERE UNABLE TO FULLY RE-STOW HANDLE. LANDING WEIGHT WAS 44,000LBS. AIRCRAFT REMOVED FROM SERVICE. REF W/O 300989 FOR THE REPLACEMENT OF THE MLG PRIORITY VALVE. OPERATIONS CHECK GOOD. NO FURTHER DEFECTS NOTED. THIS CLEARS ITEM MEL. PLACARD REMOVED.