As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WITH AUTOFEATHER ARMED AND POWERED AND PASSING APPROX 93-94 PERCENT THE AFX ANNUNCIATOR ILLUMINATES. AFTER TROUBLESHOOTING, REMOVED DEFECTIVE RT HIGH OIL PRESSURE SWITCH, INSTALLED NEW SWITCH IAW MM CHAPTER 61-21-01. GROUND RUN UP OPERATED WITHIN SPECIFICATIONS.