As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU CONTROL STATUS MESSAGE. FOUND MAINTENANCE MESSAGE 49-12990 IN MAT DF APU CONTROLLER FAULT IAW MEL. REF: FIM 49-20 & PERFORM TASK 813. FILTER ELEMENT(S) PCN: 265-0415 WITH PACKING 750-2671. REPLACED THE OIL FILTER IAW AMM 49-27-03P40A, STARTED THE APU & CHECKED THE STATUS MESSAGE, NO MESSAGE.