As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TRANSIT CHECK, DETECTED AN OIL LEAK IN THE RT ENGINE. MX PERSONNEL PERFORMED ENGINE LEAKING INSPECTION IAW AMM 73-21-00, DETECTING OIL LEAK IN THE DIFFERENTIAL PRESSURE SWITCH, SO THE O-RINGS WERE REPLACED IAW AMM 79-21-07, TESTED CORRECT.