As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GNDED. FUMES FROM PACK SYS REPORTED. FOUND SOURCE TO BE APU INGESTION OF HYD FLUID, DUE TO A LEAKING PRESS BULKHEAD TO PYLON FIRE WALL UNION FITTING. ACCOMPLISHED REPAIR TO RT ENG PRESS LINE IAW AMM 200-12-04. LEAK CHECKED GOOD. .