What was found
ORD - FLT 504 - NOTICED FUMES IN CABIN ON GROUND WHILE ON APU AIR. RAN BOTH PACKS TO FULL HOT. NO FUMES NOTED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
ORD - FLT 504 - NOTICED FUMES IN CABIN ON GROUND WHILE ON APU AIR. RAN BOTH PACKS TO FULL HOT. NO FUMES NOTED.