As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE LEFT MAIN RED GEAR LIGHT REMAINED ILLUMINATED AFTER GEAR RETRACTION LEAVING BGR. THE INDICATION HAD A BRIEF PROBLEM HISTORY. THE FLIGHT WAS CONTINUED TO EWR WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE PROXIMITY CONTROL UNIT AND OPERATIONAL CHECKS WERE GOOD.