As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - FLT 862 - EN ROUTE ORD-EWR, SHORTLY AFTER TAKEOFF DETECTED ELECTRICAL SMELL IN CABIN. FLIGHT ATTENDANT REPORTED SEEING SMOKE AT AFT CABIN. RETURNED ORD AND LANDED WITHOUT FURTHER INCIDENT. REPLACED HYDRAULIC LINE. REPLACED COALESCER BAGS. PERFORMED PACK BURNOUT PER THE MM. NO SMELL OR SMOKE NOTED. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)