As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IFSD NR 4 ENGINE LOSING OIL PRESSURE CREW RECEIVED OIL PRESS LT BY PASS LT IND AND OIL QTY READ ZERO. NR 4 ENGINE SHUTDOWN. OIL FILTER COVERED WITH BLACK PASTE AND OIL DRAINED WAS BLACK. OIL IN TAILPIPE. ENGINE CHANGED SCHEDULED. R/R NR 4 ENG PER TC 5000 HIGH POWER RUN CHECK ALL RGE OPS NORMAL