As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STRONG ODOR COMING FROM PACS, UNABLE TO ISOLATE WHICH PACK. SMELLS LIKE BURNING OFF OF CHEMICALS. REMOVED CABIN AND COCKPIT COALESCER SOCKS. INSTALLED NEW SOCKS. CLEANED AND REASSEMBLED CABIN AND COCKPIT COALESCERS. BOTH SYSTEMS OPS AND LEAK CHECK GOOD. WORK PERFORMED REF THE MM 21-51-00.