What was found
(CAN) PILOT HAD TAKEN OFF. SHORTLY THEREAFTER HEARD A THUMP FROM THE REAR FOLLOWED BY VIBRATION. ON REACHING FINAL DESTINATION INSPECTION REVEALED NR 5 TR DRIVE SHAFT BEARING 407-040-339-101 FAILED.OVERHEAT EVIDENCE ON THE HANGAR AND DAMAGE SUSTAINED TO THE RELATED DRIVE SHAFT SEGEMENT AS A RESULT OF WOBBLING WITHIN THE HANGAR. 3 BALLS STILL IN THE BEARING RACE AND 6 LODGED IN THE TAIL ROTOR GEARBOX FAIRING.