NTSB Identification: WPR13CA092
14 CFR Part 91: General Aviation
Accident occurred Thursday, January 10, 2013 in Lake Pleasant, AZ
Probable Cause Approval Date: 04/03/2013
Aircraft: Heinz Rans S-4 Coyote, registration: N571K
Injuries: 1 Uninjured.

NTSB investigators used data provided by various entities, including, but not limited to, the Federal Aviation Administration and/or the operator and did not travel in support of this investigation to prepare this aircraft accident report.

The pilot stated that, after about 30 minutes of flight, he advanced the throttle and the engine went to idle power then stopped. He restarted the engine and determined that it would only operate at idle power before it stopped again. He was flying over rocky terrain and determined that the best option was to ditch the airplane in a nearby river. After ditching the airplane in the river, the pilot swam to shore. The airplane sank and will not be recovered.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

A partial loss of engine power during cruise flight for reasons that could not be determined because the airplane was not recovered.

Full narrative available

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