As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING BOARDING CREW REPORTED FAINT ACRID ODOR IN CABIN. MAINTENANCE INSPECTED AND RAN LT AND RT RECIRCULATION FANS IAW AMM 21-25. NO FUMES NOTED. TESTED IFE NO FUMES NOTED. MAINTENANCE LATER REPLACED RIGHT RECIRCULATION FAN AS PRECAUTIONARY.