As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PREFLIGHT PILOT FOUND AN OIL LEAK IN ENGINE COMPARTMENT OF AIRCRAFT. MAINTENANCE TECHNICIAN FOUND OIL COOLER CRACKED ON THE BOTTOM FLANGE AND LEAKING OIL. THIS IS A WEAK AREA ON THE OIL COOLER. RECOMMEND FINDING A REPLACEMENT THAT IS MORE DURABLE. (K)