As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PIT FLT 2864, THE CREW REPORTED AN ELECTRICAL BURNING ODOR. CLEVELAND SENT A MAINTENANCE CREW TO INSPECT AND TROUBLESHOOT THE ODOR, THE MAINTENANCE CREW FOUND A MAGAZINE BLOCKING THE HEATING VENT AND COULD NOT DUPLICATE THE REPORTED CONDITIONS.