As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOTICED AN ODOR AT 11,000 FT DISSIPATED AT 15,000 FT FO SAID IT SMELLED LIKE BURNING RUBBER. REMOVED AND REPLACED NR 2 PACK WATER SEPARATOR CONICAL COALESCER IAW AMM 21-54-04, LEAK CHECK GOOD. DURING ENGINE RUN ISOLATED NR 2 PACK FOR 5 MINS WITH NO NOTABLE ODOR. ALSO ISOLATED NR 1 AND 3 PACKS INDEPENDENTLY WITH NO NOTICEABLE ODOR. ACFT GOOD FOR CONTINUED USE.