As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STL - FLT 842 - AIRCRAFT WAS OPERATING WITH THE LT GENERATOR PLACARDED INOPERABLE PER MEL. IN-FLIGHT, THE APU AUTO SHUTDOWN WITH EICAS MSG - APU LOW OIL PRESS. DIVERTED TO STL. REPLACED THE LEFT IDG AND PLACARDED THE APU INOP PER MEL. AIRCRAFT OPERATED TO LAYOVER STATION WHERE THE APU OIL COOLER/REGULATOR WAS REPLACED. CHECK-C 1-19-98 AT LAX. (X)