As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT BACK UP GENERATOR OFF OR FAILED. RIGHT BUG WILL NOT HOLD OIL LEAKING ON ENG RUN. NR 2 ENGINE BUG FOUND UNDERSERVICED. SERVICED UNIT RAN ENGINE, WITHIN 2 MINUTES OIL COULD BE SEEN EVACUATING FROM OVERFILL DRAIN. REMOVED BUG. INSTALLED REPLACEMENT BACK UP GENERATOR. OK FOR SERVICE.