As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RECEIVED GEAR DISAGREE DURING GEAR EXTENSION, THEN FELT A LOUD CLUNK AS GEAR FINALLY ALL LOCKED. RIGHT MAIN GEAR LOCKED FIRST, LEFT MAIN REMAINED INDICATING UP FOR LONGER THAN USUAL. NOSE EXTENSION NORMAL. MESSAGE CLEARED BEFORE WE COULD PERFORM QRH. (FLT#5583) FO: 09/12/2019 WORK IN PROGRESS.