As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: STRONG BURNING SMELL IN FORWARD CABIN AFTER TAKEOFF. EMERGENCY DECLARED; FLIGHT RETURNED TO ORD LANDING SAFELY. **SUPPLEMENTAL REPORT FOR AALA202305264252: REPLACED LEFT AND RIGHT RECIRCULATING FAN HEPA FILTER. (AALA202305264252, AALA202305306338).** (CLOSED)