As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STL INFLIGHT AUS-ORD. CREW REPORTED LEFT ENGINE OIL PRESSURE LOSS. EMERGENCY DECLARED FLIGHT DIVERTED STL LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. FOUND 6 INCH BY 2 INCH SECTION OF FWD INTER DUCT SEGMENT CRACKED AT 9 O`CLOCK POSITION ON NR 1 ENG. REPLACED NR 1 ENG AT STL ON 01/06/2014. SYSTEM GND CHECKED NORMAL OPERATION OPEN.