As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) NEWLY OVERHAULED ENGINE (6.0 HOURS) EXPERIENCED OIL PRESSURE PROBLEMS. AT NORMAL CRUISE 2400 RPM OIL PRESSURE REMAINS AT 51 PSI. SYSTEM TROUBLESHOOTING CARRIED OUT, OIL FILTER FOUND COLLAPSED DUE TO BUILD UP OF PRESSURE IN THE OIL FILTER. ENGINE REMOVED AND RETURNED TO OVERHUAL SHOP.