As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STARTED APU AND BLUE MAINT LIGHT ILLUMINATED. GROUNDED - YES. FOUND OIL LEAKAGE AT LUBE FILTER HOUSING REF AMM 49-16-11. REMOVED AND REPLACED LUBE FILTER ELEMENT WITH NEW PACKING, OIL LEAK CHECK GOOD REF AMM 49-91-12. PERFORMED APU BITE PROCEDURE NO MAINT MSG ON CDU PAGE REF FIM 49-60 NR 801. APU STARTED NORMAL - NO BLUE LIGHT NOTED REF AMM 49-11-00.