As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 PROPELLER GEAR BOX EXPERIENCED LOSS OF POWER DURING FLIGHT. CREW RETURNED TO AIRPORT AND LANDED SAFELY. NO EMERGENCY WAS DECLARED. ONCE ON THE GROUND THE CREW HAD PROBLEMS CONTROLLING THE PROPELLER. THE PROPELLER GEAR BOX WAS REMOVED AND SENT OFF FOR FURTHER EXAMINATION. IT WAS DISCOVERED THE INPUT PINION BEARING FAILED AND EXCESSIVE METAL WAS FOUND ALL THROUGH OUT THE GEARBOX.