As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT ATTENDANT REPORTED BURNING SMELL IN CABIN AFTER TAKEOFF. FLIGHT RETURNED TO MEM AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED AND FOUND FUMES COMING FROM LEFT AIR CYCLE MACHINE. REPLACED AIR CYCLE MACHINE, LEAK AND OPERATIONAL CHECK NORMAL.