What was found
EN ROUTE FROM PHL TO CVG RECEIVED APU OIL TEMP CAUTION MSG. EMERGENCY DECLARED, A/C DIVERTED TO HTS LANDED SAFELY. REMOVED AND REPLACED APU OIL COOLER.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
EN ROUTE FROM PHL TO CVG RECEIVED APU OIL TEMP CAUTION MSG. EMERGENCY DECLARED, A/C DIVERTED TO HTS LANDED SAFELY. REMOVED AND REPLACED APU OIL COOLER.