What was found
AIRCRAFT WAS GROUNDED: IN FLIGHT ODOR IN CABIN AND COCKPIT. TURNED OFF LEFT PACK ODOR DISSIPATED. MAINTENANCE ISOLATED SOURCE OF ODOR TO THE APU. **SUPPLEMENTAL REPORT FOR AALA202204188003: MAINTENANCE FOUND EVIDENCE OF OIL AT THE APU LOAD COMPRESSOR DRAIN, AROUND THE INLET AND PLENUM SEAL. CLEANED RESIDUAL OIL AND ACCOMPLISHED A SATISFACTORY LEAK / OPERATIONAL CHECK OF THE APU WITH NO ODORS BEING NOTED. ALSO ACCOMPLISHED DECONTAMINATION OF THE ENVIRONMENTAL CONTROL SYSTEM PER TASK CARD 26L00021004 WITH NO ODORS BEING NOTED. **(CLOSED)