As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN GEAR DISAGREE WARNING MESSAGES. C/W QRH PROCEDURES & ALL 3 GEARS CAME DOWN & LOCKED WITH MANUAL GEAR EXTENSION. FLT 6517 REPLACED MLG SELECTOR VLV. PERFORMED GEAR CYCLES WITH NO DEFECTS NOTED AT THIS TIME. NO LEAKS NOTED AT THIS TIME. OPERATIONS CHECKED GOOD AT THIS TIME IAW AMM PN 750005000, SN ON 0195 & SN OFF 0217T.