As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEX - FLT 5928 THE CREW REPORTED A PACK 1 VALVE CLOSED MESSAGE AFTER MULTIPLE RESETS ALONG WITH BURNING DUCT SMELL WHEN PACK 1 WAS OPERATING. MAINTENANCE INSPECTED AND RE-SECURED THE PACK 1 DUCT BETWEEN NR 1 DUAL TEMP VALVE AND NR 1 HEAT EXCHANGER. OPERATIONAL CHECKS WERE GOOD.