As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STL INFLIGHT DFW-ORD. CREW REPORTED LEFT ENGINE GENERATOR FAILED AND AUXILIARY POWER UNIT WOULD NOT START. APU START SUCCESSFUL AT 6000 FT. EMERGENCY DECLARED FLIGHT DIVERTED STL LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED LEFT ENGINE GENERATOR. ACCOMPLISHED APU ECU BITE NO FAULTS NOTED. CHECKED APU DOOR ACTUATOR NO FAULTS NOTED. SYSETM GROUND CHECK NORMAL OPERATION.