As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED BAD SMELL IN COCKPIT THROUGHOUT THE FLIGHT, AND GOT WORSE AS FLIGHT PROGRESSED. TURNED OFF PACK 1 BUT SMELL DID NOT SUBSIDE. MAINTENANCE RAN PACKS FOR 30 MINUTES AND DID NOT NOTICE ANY SMELL. PERFORMED HIGH POWER ENGINE RUNS AND FOUND NO OIL POOLING IN E1 FAN CASE. AIRCRAFT FERRIED TO IND. FOUND EVIDENCE OF A-SUMP LEAKING OIL. REMOVED AND REPLACED SEAL PRESSURE REGULATING VALVE AND PERFORMED COMP WASH. AFTER ENGINE RUN OIL WAS FOUND COVERING FAN BLADES. REMOVED AND REPLACED ENGINE NR 1.