CEN16LA031
2015-11-04 · Wakeman, Ohio, United States · Minor · 1 aircraft · Status: Completed
Airport I64
Aircraft involved
Probable cause & findings
A loss of engine power/performance for reasons that could not be determined because a postaccident examination of the airframe and engine did not reveal any anomalies that would have precluded normal operation.
Factual narrative
On November 4, 2015, about 1300 eastern standard time, an American Autogyro Inc., Sparrowhawk experimental gyrocopter, N80825, was substantially damaged during a forced landing to a field near Wakeman, Ohio. The private pilot sustained minor injuries and the passenger was not injured. Visual meteorological conditions prevailed at the time of the accident. The flight was conducted under the provisions of 14 Code of Federal Regulations Part 91 without a flight plan. The local flight had just departed Ortner Airport (I64), Wakeman, Ohio.During the takeoff from runway 22 the pilot maintained "cyclic balance" until the gyrocopter lifted off at 65 miles per hour. The red alarm light on the panel illuminated and the pilot scanned his instruments but noted nothing anomalous. The gyrocopter started to descend and he was unable to maintain altitude or climb. The pilot maneuvered the gyrocopter to avoid obstacles and trees and during the forced landing to a field it rolled to the left. The fuselage, tail boom, and rotor mast were substantially damaged. Federal Aviation Administration inspectors who responded to the accident reported that the fuel tank contained fuel and a sample of fuel taken from the system was free of visible contamination and water. The spark plugs were clean and exhibited signs of normal operation. There was no evidence of a catastrophic engine failure and nothing that would contribute to a loss of engine power. The red alarm light that illuminated on the pilot's instrument panel during the accident flight was designed to illuminate if the exhaust gas temperature or cylinder head temperature limits were exceeded. The inspector was unable to determine why this light illuminated. An examination of the engine, airframe, and systems revealed no anomalies that would have precluded normal operation of the engine prior to the impact. The private pilot was conducting a local personal flight. The pilot reported that, during takeoff, he maintained "cyclic balance" until the gyrocopter lifted off at 65 mph. Subsequently, the red alarm light, which was designed to illuminate if the exhaust gas temperature or cylinder head temperature was exceeded, illuminated. The pilot scanned his instrument panel but noted nothing else anomalous. The gyrocopter started to descend, and the pilot was unable to maintain altitude or climb. The pilot maneuvered the gyrocopter to avoid obstacles and trees, and during the forced landing to a field, it rolled left. An examination of the engine, airframe, and systems revealed no anomalies that would have precluded normal operation. The investigation could not determine why the light illuminated or the gyrocopter's performance degraded. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
FAA avdata. C = Cause, F = Factor.
- C Not determined-Not determined-(general)-(general)-Unknown/Not determined - C
Verbatim from NTSB's published report. Source file
NTSB_2015_CEN16LA031.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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Related research
Matched on aircraft type or causal vocabulary (engine failure). All research papers
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- NASA NTRS 2019 · Technical Memorandum (TM) A simulator investigation of engine failure compensation for powered-lift STOL aircraft
A piloted simulator investigation of various engine failure compensation concepts for powered-lift STOL aircraft was carried out at the Ames Research Center.
- Semantic Scholar 2019 · Article (AIAA Scitech 2019 Forum) Impact of Engine Failure Constraints on the Initial Sizing of Hybrid-Electric GA Aircraft
Potential advantages of hybrid-electric aircraft are fuel savings, lower emissions, and reduced noise. Since these aircraft generally apply multiple power sources, they can also be designed to sustain…