As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FINAL, AFTER PLACING THE LANDING GEAR LEVER DOWN, THE MAIN LANDING GEAR DID NOT UNLOCK. A DISAGREE MESSAGE APPEARED. WHEN EXECUTING THE MISSED APPROACH, THE GEAR DEPLOYED AND LOCKED. PERFORMED GEAR INSPECTION ON ALL GEARS. NO DEFECTS NOTED. PERFORMED NUMEROUS GEAR SWINGS. OPS CHECKS GOOD IAW MM 32-32-00.