As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLT-GSO - FLT 690 - BEFORE LANDING AT GSO, LEFT MAIN GEAR WAS DOWN BUT SHOWED A RED UNSAFE INDICATION. CREW DID A GO AROUND PROCEDURE. CAPTAIN REQUESTED CFR. FLIGHT LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE LEFT MLG DOWNLOCK ACTUATOR. GEAR SWING WAS PERFORMED AFTER INSTALL. ALL OPERATIONS CHECKED GOOD. (M)