As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: ODOR NOTICED IN FLIGHT DECK AND CABIN AFTER DEPARTURE AND DISSIPATED AS THE AIRCRAFT CLIMBED TO CRUISE. THE ODOR RETURNED ON ARRIVAL BELOW 10,000 FEET. **SUPPLEMENTAL REPORT FOR AALA202502073801: MAINTENANCE FOUND THE APU OIL COOLING FAN TRANSFER TUBE LEAKING OIL AND REPLACED THE TRANSFER TUBE AND ASSOCIATED PACKINGS. A DECONTAMINATION OF THE ENVIRONMENTAL CONTROL SYSTEM WAS ACCOMPLISHED PER TASK CARD 26L00021014. ** (CLOSED)