As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH-CREW REPORTED A BURNING SMELL FROM FIRST OFFICERS SIDE PANEL. A/C LANDED AT IAH WITHOUT INCIDENT. MX INSPECTED A/C AND FLUND A LOOSE LUG ON APU FEEDER PROTECTION RELAY. THE AFFECTED LUG WAS RESECURED AND A/C APPROVED FOR RETURN TO SERVICE.