As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH, THE RIGHT MAIN GEAR STAYED IN TRANSIT FOR SEVERAL SECONDS THEN GAVE THE GEAR DISAGREE WARNING. UPON INITIALIZING THE GO-AROUND THE RIGHT MAIN INDICATED GREEN DOWN AND TOWER VERIFIED ITS POSITION. (FLT#3953) FO: 07/02/2019 CLOSED REMOVED AND REPLACED RT MLG SIDESTAY ACTUATOR, UPLOCK ACTUATOR AND #3A HYDRAULIC PUMP IAW AMM. OPS CHECK GOOD.