As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEAR DISAGREE, PERFORMED QRH, LANDED UNEVENTFULLY. FIRST TRY THE NOSE GEAR WOULD NOT COME OUT OF YELLOW HATCHING. GEAR UP, 2ND TRY NOSE EXTENDED BUT MAINS WOULD NOT. FLAPS 20, DUAL PU-S 180 KTS MANUAL RELEASE TO RELEASE MAINS. FLT#6539 REPLACED THE MLG SELECTER VALVE IAW AMM. PERFORMED EXTENSIVE OPERATIONAL CHECK OF THE LANDING GEAR EXTENSION/RETRACTION. PN ON/OFF 750005000, SN ON 0217T & SN OFF 0038T.