As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU OIL FILTER INDICATOR EXTENDED. GROUNDED - YES. REPLACED OIL FILTER INSPECTED MAG PLUG NO DEFECTS FOUND. RESET OIL FILTER INDICATOR. PERFORMED LEAK CHECK, NO LEAKS FOUND IN REF TO B737-9 AMM 49-91-13. ETOPS ENG OILS SERVICED IN REF TO AMM 12-13-31 C/N 931812.