GAA17CA390
2017-07-07 · Topeka, Kansas, United States · Minor · 1 aircraft · Status: Completed
Airport TOP
N650HP has since been reassigned. It is now registered to a different aircraft (AIRBUS HELICOPTERS INC AS350B3, built 2024), which was not involved in this event.
Aircraft involved
Probable cause & findings
The pilot’s failure to maintain clearance from a building during landing.
Factual narrative
The pilot of the helicopter reported that, during a hover taxi under night vision goggles, he "pedal turned facing the west to line up with [the] landing lines painted on the ramp". He added that, he looked under his goggles and observed the right painted mark under the right skid, and noted that he estimated that they were about 6 ft above the ground. He then looked back into his goggles to land the helicopter. The tactical field officer that was on board the helicopter advised the pilot that they needed to move forward. The pilot further reported that he "tried to move forward but nothing happened at which time [he] felt a sudden jolt and then [heard] the noise of the tail rotor strike". The helicopter impacted a building then impacted the ground. The helicopter sustained substantial damage to the fuselage. The pilot reported that there were no preaccident mechanical malfunctions or failures with the helicopter that would have precluded normal operation. The pilot of the helicopter reported that, during a hover taxi while using night vision goggles, he "pedal turned facing the west to line up with [the] landing lines painted on the ramp." He added that he looked under his goggles and observed the right painted mark under the right skid and noted that he estimated that the helicopter was about 6 ft above the ground. He then looked back through his goggles to land the helicopter. The tactical field officer that was on board the helicopter advised the pilot that they needed to move forward. The pilot further reported that he "tried to move forward but nothing happened at which time [he] felt a sudden jolt and then [heard] the noise of the tail rotor strike." The helicopter struck a building and then impacted the ground. The helicopter sustained substantial damage to the fuselage. The pilot reported that there were no preaccident mechanical malfunctions or failures with the helicopter that would have precluded normal operation. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
FAA avdata. C = Cause, F = Factor.
- C Personnel issues-Psychological-Attention/monitoring-Monitoring environment-Pilot - C
- C Environmental issues-Physical environment-Object/animal/substance-Airport structure-Effect on operation - C
- C Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Altitude-Not attained/maintained - C
Verbatim from NTSB's published report. Source file
NTSB_2017_GAA17CA390.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. All research papers
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- Embry-Riddle Scholarly Commons 2024 · Conference paper Tour-Based Network Design and Demand Forecasting for Advanced Air Mobility (AAM)
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- SKYbrary (Eurocontrol) 2023 · SKYbrary article Pilot Fatigue — SKYbrary Knowledge Base
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- NASA NTRS 2019 · Conference Paper Simulation Modeling Requirements for Loss-of-Control Accident Prevention of Turboprop Transport Aircraft
In-flight loss of control remains the leading contributor to aviation accident fatalities, with stall upsets being the leading causal factor. The February 12, 2009.