After takeoff from St Mawgan the flight crew were informed by ATC that a main wheel had fallen from the aircraft. The aircraft returned to St Mawgan and landed uneventfully. The wheel was released due to a failure of the wheel bearing, but only a limited amount of the failed bearing was recovered. The failure mode of the bearing was not determined. The aircraft manufacturer has investigated several other such events and, as a result, introduced several measures to improve the durability of the bearing.
DHC-8-311 , G-WOWD 07-07.pdf (246.28 kb)