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Atlas / NTSB / CEN12CA402

NTSB CAROL · Event

Event CEN12CA402

2012-06-26 Grinnell, Iowa, United States Airport · GGI None 1 aircraft Status: Completed

Aircraft involved

Probable cause & findings

The pilot’s inadequate compensation for the wind during a hovering maneuver, which resulted in a loss of tail rotor effectiveness and directional control.

Factual narrative

The pilot and his passenger were returning to the airport after a local flight. In preparation to land, the pilot approached a grassy area adjacent to the runway and entered a hover into a 12 knot wind. The wind was also gusting to 16 knots. The pilot then made a right pedal turn downwind. He said that during the turn, the wind caught the tail and the helicopter began to spin. The pilot did not have enough left pedal to stop turning and the tailrotor struck a fence and the main rotor blades hit the ground. A review of photographs taken of the helicopter after the accident revealed the tail rotor blades, main rotor blades, and fuselage were substantially damaged. The pilot reported no mechanical malfunctions prior to the accident. The helicopter pilot and his passenger were returning to the airport after a local flight. In preparation to land, the pilot approached a grassy area adjacent to the runway and entered a hover into a 12-knot wind that was gusting to 16 knots. The pilot then made a right-pedal turn downwind. He said that during the turn the wind caught the tail and the helicopter began to spin. The pilot could not stop the turning; the tailrotor struck a fence, and the main rotor blades hit the ground. A review of photographs of the helicopter taken after the accident revealed that the tail rotor blades, main rotor blades, and fuselage were substantially damaged. The pilot reported no preaccident mechanical malfunctions with the helicopter. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12

NTSB Findings

Hierarchical cause / factor breakdown from the FAA bulk avdata database. Each finding tagged C (Cause) or F (Factor).

  • C Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot - C
  • C Environmental issues-Conditions/weather/phenomena-Wind-Gusts-Response/compensation - C

Verbatim from NTSB's published report. Source file NTSB_2012_CEN12CA402.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.