The pilot noted the takeoff of the RV-6A from Spearfish, S.D., was normal, but as the airplane climbed through 6,000 feet the engine suddenly lost power.
He switched on the auxiliary fuel pump and tried to restart the engine, but was unsuccessful, so he made a forced landing to a nearby pasture.
The nose landing gear collapsed during the landing, and the airplane came to rest inverted. The pilot and passenger received minor injuries.
The RV-6A had an automotive engine which had been adapted for aviation use. During the investigation it was determined that the coil-distributor wire had loosened and was no longer connected to the coil, rendering the automotive ignition system inoperative and causing the engine to lose power.
The NTSB determined the probable cause was the coil-distributor wire loosening in flight, which rendered the ignition system inoperative and subsequently caused the loss of engine power.
NTSB Identification: CEN13LA220
This April 2013 accident report is provided by the National Transportation Safety Board. Published as an educational tool, it is intended to help pilots learn from the misfortunes of others.