As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 ENGINE SHUTDOWN IN FLIGHT DURING TRAINING DUE TO A TRIPPING OF THE NR 2 OVER SPEED PROTECTION BOX. PILOTS VERIFIED VISUALLY THAT THERE WAS NO OVERSPEED THAT OCCURRED AND PROCEEDED WITH A RUN ON LANDING. AFTER TROUBLESHOOTING WE FOUND THE OVERSPEED PROTECTION ON THE NR 2 TACHOMETER BOX WAS ACTIVATED.