As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB-OUT FROM KUGN AT 10,000 MSL, THE CREW NOTICED SUDDEN, HIGH VIBRATIONS FROM THE RIGHT ENGINE. REDUCING POWER PUT VIBRATIONS AT AN ACCEPTABLE LEVEL. ALL TROUBLESHOOTING PER THE TAY MM PROVED NEGATIVE AS TO A DEFINITIVE CAUSE OF THE VIBRATIONS. THE ENGINE WAS REJECTED BASED ON THE VIBRATION LEVELS AND SENT TO A REPAIR FACILITY FOR EVALUATION. (X)