As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STRONG ODOR OF MELTING PLASTIC ON DESCENT, F/A REPORTED THAT ODOR WAS PRESENT FOR MOST OF THE FLIGHT BUT GOT MUCH WORSE ON DECENT AFTER PACKS WERE TRANSFERED TO APU. R & R LT AND RT COALESCER SOCKS REF AMM 21-51-13. OPS CHECKED GOOD. LEAK CHECKED GOOD, NO DEFECTS NOTED AT THIS TIME.