As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACCOMPLISHING T/C 78349013, APU OIL FILTER DELTA-P INDICATOR DETAILED INSPECTION, FOUND DELTA-P RED INDICATOR EXTENDED. REQ OIL FILTER INDICATOR SERVICING. ACFT GROUNDED. ACCOMPLISHED OIL FILTER INDICATOR SERVICING REF MM 49-91-13-600-801. R & R LUBE FILTER ELEMENT REF MM 49-91-12. INSTALLATION TEST CKS GOOD, NO LEAKS NOTED REF MM 49-91-12.