As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIVERTED DUE TO A FAINT ODOR, WHILE ISOLATING THE SOURCE, PERFORMED BORESCOPE INSPECTION ON THE NR 1 ENGINE IAW TSM 05-50-00-810-813-A. FOUND NO ACTIVE OIL LEAKS OR PUDDLING. REMOVED & REPLACED BOTH RECIRCULATION FILTERS IAW AMM 21-21-41. ACCOMPLISHED DECONTAMINATION OF THE ECS IAW AMM 21-00-00. REMOVED & REPLACED OZONE FILTER IAW MM 21-51-41 NR 1 PACK. REMOVED & REPLACED THE NR 2 PACK OZONE FILTER IAW AMM 21-51-41.