# NTSB investigations: Robinson Helicopter R66: Collision with terr/obj (non-CFIT)

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

## Latest cases

- [NTSB CEN26LA153](https://openairdocs.org/ntsb/CEN26LA153.md): Robinson Helicopter R66 · Arlington, TX · Accident · No injuries · Class 4 · Limited · Final report · Mar 27, 2026 · N4059A · Substantial damage
  > The pilot’s failure to maintain clearance from terrain during the hover taxi.
- [NTSB WPR26FA031](https://openairdocs.org/ntsb/WPR26FA031.md): Robinson Helicopter R66 · Ekalaka, MT · Accident · 4 fatal · Class 3 · Field · Preliminary report · Oct 23, 2025 · N67GA · Substantial damage
  > On October 22, 2025, about 1830 mountain daylight time, a Robinson Helicopter Co. R66, N67GA, was substantially damaged when it was involved in an accident near Ekalaka, Montana. The pilot and 3 passengers were fatally injured. The helicopter was operated as…
- [NTSB ERA21FA362](https://openairdocs.org/ntsb/ERA21FA362.md): Robinson Helicopter R66 · Monticello, GA · Accident · 3 fatal · Class 3 · Field · Final report · Sep 16, 2021 · N888DV · Destroyed
  > The pilot’s decision to continue the visual flight rules flight into deteriorating weather conditions during a dark night and over unlit terrain, which resulted in spatial disorientation and a subsequent loss of helicopter control.
- [NTSB ERA21LA171](https://openairdocs.org/ntsb/ERA21LA171.md): Robinson Helicopter R66 · Palmyra, PA · Accident · Serious injuries · Class 3 · Limited · Final report · Apr 3, 2021 · N577DD · Substantial damage
  > The pilot’s improper judgment to attempt a flight while impaired by medications, which resulted in the helicopter’s abnormal ground contact, loss of control, and collision with terrain.
- [NTSB ERA20FA074](https://openairdocs.org/ntsb/ERA20FA074.md): Robinson R66 · Mechanicsburg, PA · Accident · 2 fatal · Class 3 · Field · Final report · Jan 10, 2020 · N450MC · Destroyed
  > A severe left roll excursion after the onset of pitch and roll oscillations, which were not arrested by the pilot for undetermined reasons. This resulted in main rotor blade contact with the airframe and a subsequent inflight breakup of the helicopter.
- [NTSB GAA19CA481](https://openairdocs.org/ntsb/GAA19CA481.md): Robinson R66 · Vandalia, IL · Accident · No injuries · Data collection · Final report · Aug 2, 2019 · N1767L · Substantial damage
  > The pilot's failure to maintain clearance from power lines during an agricultural application flight.
- [NTSB GAA18CA366](https://openairdocs.org/ntsb/GAA18CA366.md): Robinson R66 · Cordova, AK · Accident · No injuries · Data collection · Final report · Jun 19, 2018 · N7040P · Substantial damage
  > The pilot’s selection of unsuitable terrain for landing, which resulted in impact with brush and a loss of helicopter control.
- [NTSB GAA16CA290](https://openairdocs.org/ntsb/GAA16CA290.md): Robinson Helicopter R66 · Beaumont, TX · Accident · No injuries · Data collection · Final report · Jun 7, 2016 · N38SL · Substantial damage
  > The non-pilot owner's decision to start the helicopter while awaiting the pilot's arrival, which resulted in a loss of yaw control and a rollover.
- [NTSB ERA15CA079](https://openairdocs.org/ntsb/ERA15CA079.md): Robinson Helicopter R66 · Henniker, NH · Accident · No injuries · Data collection · Final report · Dec 22, 2014 · N64HF · Substantial damage
  > The pilot's failure to maintain aircraft control while landing, which resulted in a collision with a snow bank. Contributing to the accident was ice that covered the landing surface.
- [NTSB ERA13FA336](https://openairdocs.org/ntsb/ERA13FA336.md): Robinson R66 · Noxen, PA · Accident · 5 fatal · Field investigation · Final report · Jul 28, 2013 · N646AG · Destroyed
  > The pilot's decision to continue VFR flight into night instrument meteorological conditions, which resulted in spatial disorientation and a loss of control.
- [NTSB CEN12FA001](https://openairdocs.org/ntsb/CEN12FA001.md): Robinson Helicopter R66 · Philip, SD · Accident · 1 fatal · Field investigation · Final report · Oct 1, 2011 · N266CY · Destroyed
  > The in-flight separation of the main rotor mast following a mast bumping event. The reason for the mast bumping event could not be determined due to postaccident damage.

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1
WHERE c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('7640130')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s.case_mkey = x.case_mkey AND s.aircrafts_position = x.position AND s."tier2Number" = '470' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent")))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/470/sequence?model=7640130

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