As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"APU FAULT" DISPLAYED ON FIRST START WHICH WAS UNSUCCESFUL. "APU FAULT" EXTINGUISHED AND SECOND START WAS NORMAL. BITE CHECKED APU CONTROL BOX. FOUND LOW OIL PRESSURE FAULT. FOUND OIL FILTER BYPASS INDICATOR OUT. R & R OIL SCAVENGE FILTER. LEAK AND OPS CHECKED OK.