As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU FAULT AND SHUTDOWN TWICE AFTER LANDING. BITE CHECK ECU FAULTS GEN FILTER CLEANED PRESS SW, NO HELP. GEN FILTER DPI IS NOT POPPED. SEE HISTORY. FOUND OIL ONE QT LOW. ECU BITE HAD NO FAULTS RECORDED. START AND RUN FOUR TIMES FOR TOTAL OF ONE HOUR. APU RUNS NORMAL.