What happened
The pilot reported that the engine cylinder temperature became excessively high while flying through mountainous terrain. In response to this mechanical concern, the pilot elected to perform a precautionary landing on a nearby short airstrip. This location presented significant challenges due to its high density altitude conditions.
During the approach and landing phase, the aircraft touched down beyond the normal touchdown zone. The excessive speed or late flare resulted in the aircraft overrunning the available runway surface. Upon exiting the paved area, the aircraft nosed over onto its back, coming to rest inverted.
The investigation
The investigation focused on the mechanical status of the engine and the circumstances surrounding the landing. The primary finding was the reported high engine cylinder temperature prior to the decision to land. No other mechanical failures were explicitly cited in the narrative provided.
Findings
The accident occurred during a precautionary landing initiated due to high engine cylinder temperature. Contributing factors included the choice of an airstrip with high density altitude and a short runway length. The pilot's decision to land on this specific strip, combined with touching down beyond the normal zone, led to the overrun.
The aircraft sustained substantial damage as it overran the runway and nosed over. No injuries were reported in the source text, but the structural integrity of the airframe was compromised by the inversion.