CIRCUMSTANCES: "The pilot of VH-CXE was flying in company with, but about two miles ahead, of another aircraft flown by his daughter. VH-CXE was observed apparently flying a straight in approach to the sealed Runway 01 at Mt Margaret and to then go around from the approach (there was a 15 knot crosswind from the right at the time). The following aircraft also went around from its initial approach and flew another circuit. Neither occupant of this aircraft saw VH-CXE during the second circuit and a radio query failed to bring any response. A fire was noticed on the western threshold of the dirt cross strip but this was not associated with VH-CXE. Later, when VH-CXE could not be located, the position of the fire was examined and confirmed as the wreckage of VH-CXE. Investigation revealed that the aircraft had struck the ground in a near vertical nose-down attitude while rotating left. The wreckage had burnt out and the extent of fire damage precluded a complete examination of the aircraft and its systems. However, no evidence was found to suggest that the aircraft was not capable of normal operation prior to the accident. It was established that the landing gear was locked down, the wing flaps were fully extended and the engine was producing substantial power at impact. It was not possible to determine if the pilot experienced incapacitation prior to the accident."