As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEAR DISAGREE WARNING DURING APPROACH. THE RIGHT MAIN GEAR DID NOT EXTEND. DURING THE GO-AROUND THE RIGHT MAIN GEAR EXTENDED AND THE WARNING WENT AWAY. COMPLIED WITH THE QRH AND LANDED WITHOUT ANY OTHER ISSUES. REMOVED AND REPLACED MLG SELECTOR VALVE IAW AMM.