# NTSB investigations: Robinson Helicopter R44 II: Roll over

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 CEN26LA168](https://openairdocs.org/ntsb/CEN26LA168.md): Robinson Helicopter R44 · Mount Blanco, TX · Accident · Minor injuries · Class 4 · Limited · Final report · Apr 17, 2026 · N445JS · Substantial damage
  > The pilot’s failure to maintain proper main rotor rpm during a low-level turn, which resulted in the main rotor rpm drooping, a loss of control at an altitude too low for recovery, and a subsequent impact with terrain.
- [NTSB ERA24LA236](https://openairdocs.org/ntsb/ERA24LA236.md): Robinson R44 · Gilbertsville, KY · Accident · No injuries · Class 4 · Limited · Final report · Jun 2, 2024 · N220SW · Substantial damage
  > The pilot's failure to maintain control of the helicopter while attempting to take off from sloping terrain.
- [NTSB ANC21LA080](https://openairdocs.org/ntsb/ANC21LA080.md): Robinson Helicopter R44 II · Pelican, AK · Accident · No injuries · Class 4 · Limited · Final report · Aug 31, 2021 · N779DZ · Substantial damage
  > The pilot’s loss of control while landing on a remote helipad.
- [NTSB GAA19CA428](https://openairdocs.org/ntsb/GAA19CA428.md): Robinson R44 · Council Bluff, IA · Accident · Minor injuries · Data collection · Final report · Jul 16, 2019 · N124LA · Substantial damage
  > The pilot's improper cyclic input during liftoff from a landing deck, which resulted in the right skid hooking onto an opening on the landing deck and a subsequent dynamic rollover.
- [NTSB GAA19CA103](https://openairdocs.org/ntsb/GAA19CA103.md): Robinson R44 · Strykersville, NY · Accident · No injuries · Data collection · Final report · Dec 18, 2018 · N7535S · Substantial damage
  > The structural failure of the home-built landing platform during landing, which resulted in the helicopter rolling over.
- [NTSB WPR17LA168](https://openairdocs.org/ntsb/WPR17LA168.md): Robinson Helicopter R44 II · Lake Sutherlin, MT · Accident · No injuries · Limited investigation · Final report · Jul 25, 2017 · N233JD · Substantial damage
  > The pilot’s transition into an out-of-ground-effect hover in high-density altitude conditions that exceeded the helicopter’s performance capabilities, which resulted in loss of rotor rpm.
- [NTSB GAA17CA165](https://openairdocs.org/ntsb/GAA17CA165.md): Robinson Helicopter R44 · Spofford, TX · Accident · Minor injuries · Data collection · Final report · Feb 19, 2017 · N804DF · Substantial damage
  > The pilot's decision to hover-taxi out of the hangar and his subsequent failure to maintain clearance from the hangar.
- [NTSB GAA16CA297](https://openairdocs.org/ntsb/GAA16CA297.md): Robinson Helicopter R44 · Chireno, TX · Accident · No injuries · Data collection · Final report · Jun 7, 2016 · N41407 · Substantial damage
  > The student pilot's selection of unsuitable terrain for landing, which resulted in the helicopter rolling over during landing, and substantial damage to the tail boom.
- [NTSB CEN15LA198](https://openairdocs.org/ntsb/CEN15LA198.md): Robinson Helicopter R44 II · Dunlap, IL · Accident · No injuries · Limited investigation · Final report · Apr 15, 2015 · N754R · Substantial damage
  > A loss of main rotor rpm for reasons that could not be determined during postaccident examinations.
- [NTSB WPR14CA019](https://openairdocs.org/ntsb/WPR14CA019.md): Robinson R44 - II · Sedro Woolley, WA · Accident · No injuries · Data collection · Final report · Oct 18, 2013 · N414CC · Substantial damage
  > The non-instrument rated pilot's inadvertent encounter with instrument meteorological conditions during initial climb and his improper decision to continue flight, which resulted in an in-flight impact with a tree and an emergency descent that resulted in a…
- [NTSB CEN12CA643](https://openairdocs.org/ntsb/CEN12CA643.md): Robinson Helicopter R44 II · Slaton, TX · Accident · No injuries · Data collection · Final report · Sep 18, 2012 · N957R · Substantial damage
  > The pilot’s misalignment of the helicopter during landing, which resulted in the helicopter’s fall from a raised platform.
- [NTSB LAX08LA183](https://openairdocs.org/ntsb/LAX08LA183.md): Robinson R44 II · Topanga, CA · Accident · Minor injuries · Limited investigation · Final report · Jun 15, 2008 · N168AG · Substantial damage
  > The in-flight separation of the tail rotor gear box for an undetermined reason. Contributing to the accident was the hilly terrain, which was unsuitable for a forced landing.
- [NTSB LAX08CA182](https://openairdocs.org/ntsb/LAX08CA182.md): Robinson R44 II · Missoula, MT · Accident · Minor injuries · Data collection · Final report · Jun 14, 2008 · N272SW · Destroyed
  > The student's inadvertent control interference, which the flight instructor was unable to overcome. A contributing factor was the instructor's poor crew coordination in his failure to verbally command the student to relinquish the controls and his inadequate…
- [NTSB NYC08CA083](https://openairdocs.org/ntsb/NYC08CA083.md): Robinson R44 II · Fenner, NY · Accident · Minor injuries · Data collection · Final report · Jan 15, 2008 · N122AA · Substantial damage
  > The pilot's delayed decision to perform a precautionary landing. Contributing to the accident was the reduced visibility in snow and the soft terrain.

## 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 ('7640122', '7640123')
    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" = '097' 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/097/sequence?model=7640122

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