Amateur-built RV6 N596JB accident near Chillicothe, Ohio

Probable cause

The pilot's failure to maintain control of the airplane following an intermittent loss of engine power during cruise flight that resulted in him impacting trees. The reason for the loss of engine power could not be determined based on the available information.

NTSB analysis

The pilot departed an experimental, amateur-built airplane on a cross-country flight in day visual meteorological conditions. A witness near the accident site said the airplane "engine slowed or stalled," then the engine "refired" and subsequently "stalled" Again. He then observed the airplane in a left bank turn and the engine sounded "wide open" until the airplane impacted trees and terrain.

Examination of the wreckage did not reveal any preimpact mechanical anomalies that would have precluded normal operation. The airplane's full authority digital engine control (FADEC) system components were operational.

Although toxicology testing detected ethanol, its presence could be attributed to postmortem production.

During a flight review a few weeks before the accident, the pilot told a flight instructor that he previously had trouble with the airplane's ignition system. The flight instructor reported that there were no ignition issues during the flight review.

Based on the available information, it is likely that the airplane had intermittent engine issues, which could not be replicated during postaccident examination and testing. When the engine lost power, the pilot did not maintain airplane control and impacted trees and terrain.

Text from the NTSB. Open the NTSB docket for CEN19FA144 for the full record.