As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#2 ENGINE OVERSPEED FAIL LIGHT CAME ON AT 0.2 HRS AT HOVER. A TEST FLIGHT EVAL FOUND #2 ENGINE OVERSPEED FAIL CAUTION LIGHT ILLUMINATED 6 MINUTES INTO THE GROUND RUN. REMOVED AND REPLACED OVERSPEED SENSOR IAW EMM 77-14-00-900-802-A01. MOC SUCCESSFULLY COMPLETED.