As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT MAIN GEAR DID NOT EXTEND ON FIRST ATTEMPT. GEAR HANDLE WAS RAISED UNTIL ALL GEAR SHOWED UP. THE GEAR WAS LOWERED AND SHOWED DOWN AND LOCKED. (FLT#5063) FO: 07/23/2019 CLOSED REMOVED AND REPLACED LEFT MAIN GEAR UPLOCK ASSY. OPS CHECKS GOOD NO LEAKS NOTED AT THIS TIME. COMPLIED WITH GEAR SWINGS AND OPS CHECK FREE FALL.