Amateur-built Sparrow Hawk accident near Hernando, Mississippi, December 2, 2017

The NTSB's narrative final · quoted from the NTSB record

The sport pilot and pilot-rated passenger departed in the gyroplane at an unknown time. A hunter in the area of the accident site heard a loud sound similar to a gunshot, but dismissed it as another hunter. He left the area shortly thereafter and while walking, saw a grass fire; authorities who responded found the wreckage, which was about 0.17 miles from the departure airport. The gyroplane descended through trees at a steep angle and the left main landing gear impacted the ground first; the gyroplane came to rest on its right side and was destroyed as a result of the postcrash fire. Examination of the flight controls, engine, and engine systems revealed no evidence of pre-impact failure or malfunctions that would have precluded normal operation. A mechanic familiar with the gyroplane reported that the pilot had repaired a fuel tank leak several months before the accident. The day before the accident, the owner reported smelling fuel while in the cabin, but stated that he had not observed any fuel leaks. Whether the pilot identified the source of the fuel smell or made any repairs before the accident flight could not be determined. Autopsy and toxicology testing of the pilot revealed no evidence of physiological impairment or incapacitation. The reason for the gyroplane's steep descent and impact with terrain could not be determined based on the available information.

The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.