What was found
PIT - FLT 19 - EN ROUTE PHL/LAX OVER PIT, CREW REPORTED THE LEFT ENGINE WAS TRAILING BLUE SMOKE. THE FLIGHT DIVERTED TO PIT AND LANDED WITH NO FURTHER INCIDENT. MAINTENANCE REPLACED THE LEFT ENGINE FUEL - OIL COOLER. (X)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PIT - FLT 19 - EN ROUTE PHL/LAX OVER PIT, CREW REPORTED THE LEFT ENGINE WAS TRAILING BLUE SMOKE. THE FLIGHT DIVERTED TO PIT AND LANDED WITH NO FURTHER INCIDENT. MAINTENANCE REPLACED THE LEFT ENGINE FUEL - OIL COOLER. (X)