As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ENGINE FUEL OIL COOLER BYPASS VALVE ASSY HAS A RUNNING OIL LEAK AROUND ASSY. RE-CLEANED AREA WITH CONTACT CLEANER AND RE-RUN ENGINE AND BYPASS ASSY IS DRIPPING AFTER ENGINE SHUTDOWN. OIL IS VISIBLE RUNNING DOWN FWD CONNECTORS OF BYPASS VLV.