ERA20CA151
2020-04-10 · Townsend, Tennessee, United States · None · 1 aircraft · Status: Completed
Aircraft involved
Probable cause & findings
The motor glider's encounter with atmospheric lift conditions that were not sufficient to maintain flight, which necessitated a forced landing and resulted in impact with vegetation. Contributing to the accident was the pilot's delayed decision to restart the motor glider's engine.
Factual narrative
The pilot of the motor-glider reported that, while enroute on a local flight he encountered an area of unexpected sink. Turning toward an area where lift was expected, additional sink was encountered. When the motor-glider was about 300 ft above the trees, the propeller was unfeathered and the engine was started. The motor-glider continued to descend due to downdraft and the pilot deployed the airframe parachute. The motor-glider continued to descend and impacted vegetation.The motor-glider sustained substantial damage to both wings and fuselage. The pilot reported that there were no preaccident mechanical failures or malfunctions with the motor-glider that would have precluded normal operation. The pilot reported that, while en route, the motor glider began to lose altitude unexpectedly. He turned the motor glider toward an area where lift was expected, but it continued to descend. When the motor glider was about 300 ft above trees, he unfeathered the propeller and started the engine. The motor glider continued to descend due to a downdraft, and the pilot deployed the airframe parachute. Subsequently, the motor glider impacted vegetation, which resulted in substantial damage to both wings and the fuselage. The pilot reported that there were no preaccident mechanical failures or malfunctions with the motor glider that would have precluded normal operation. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
FAA avdata. C = Cause, F = Factor.
- C Environmental issues-Conditions/weather/phenomena-Temp/humidity/pressure-Thermal lifting-Effect on equipment - C
- C Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Altitude-Not attained/maintained - C
- C Environmental issues-Physical environment-Object/animal/substance-Tree(s)-Effect on operation - C
- F Personnel issues-Action/decision-Action-Delayed action-Pilot - F
Verbatim from NTSB's published report. Source file
NTSB_2020_ERA20CA151.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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