The aircraft touched down, in a three point attitude, just short of the sealed runway and bounced. The pilot applied power and the aircraft was landed, mainwheels first, on the runway. Towards the end of the landing roll, as the nose of the aircraft was lowered, the propeller contacted the runway and the aircraft came to rest with the nosewheel pushed back against the gear doors. Pieces of metal from the nosegear landing assembly were found along the runway. No evidence was found of any pre-existing defect in the nosewheel mechanism. At the point of touchdown the nosewheel struck the five centimetre high lip at the end of the sealed runway. This impact broke the bearing end of the nosegear retraction assembly actuator which resulted in the nosegear collapsing.