As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS RECIRC FAN STATUS MESSAGE FLIGHT ATTENDANT REPORT SLIGHT SMELL BURNING IN THE CABIN. SMELL WENT AWAY AFTER A SHORT WHILE. MAINTENANCE ACCOMPLISHED JOB CARD 05-96-70. REPLACED AFT UPPER RECIRC FAN, OPS CHECKED NORMAL IAW AMM 21-25-00.