What was found
GEAR DISAGREE WARNING MSG AFTER T/O. NOSE GEAR INDICATED UNSAFE AND NOT UP AND LOCKED. C/W QRH. GEAR INDICATED DOWN AND LOCKED AFTER USING EMERGENCY EXTENSION HANDLE. ALL MSG'S EXTINGUISHED AFTER QRH. GEAR DISAGREE MESSAGE ORIGINALLY APPEARED 6-10 SECONDS AFTER GEAR UP HANDLE SELECTION. EMERGENCY WAS DECLARED PRIOR TO LANDING. AIR SPEED REMAINED 200 KNOTS OR LESS. LW 41,000 IBS. AIRCRAFT REMOVED FROM SERVICE, NLG PRIORTY VALVE AND UPLOCK REPLACED ON WO 346856, WC'S 9-10. OPS CHECKS WERE GOOD. SEE WO 346856 FOR DETAILS AND RII REQUIREMENTS. NLG UPLOCK, SAFRAN, PN; 16600-103, SN NGL/0750/03, NEW TIME: NEW CYCLES:, INSTAL TIME: , REPAIRED LAST