As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 3864 (AZO TO DTW) PASSENGER'S NOTICE A SMELL OF BURNING PLASTIC AROUND ROW 5, EN ROUTE. FLIGHT ATTENDENT CONFIRMS THE SMELL. AIRCRAFT CONTINUED AND LANDED IN DTW. REMOVED AND REPLACED LEFT AND RIGHT COALESCER BAGS IAW AMM 21-51-13. OK FOR SERVICE.