# NTSB investigations, CA: Dynamic rollover

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 WPR24LA251](https://openairdocs.org/ntsb/WPR24LA251.md): Robinson Helicopter R44 · Carlsbad, CA · Accident · Minor injuries · Class 4 · Limited · Final report · Jul 18, 2024 · N886JB · Substantial damage
  > The pilot’s failure to maintain lateral control of the helicopter while departing with a crosswind, which resulted in a dynamic rollover.
- [NTSB WPR20CA059](https://openairdocs.org/ntsb/WPR20CA059.md): Sud SE 3130 Alouette II · Mokelumne Hills, CA · Accident · No injuries · Data collection · Final report · Jan 4, 2020 · N92785 · Substantial damage
  > The pilot's failure to maintain adequate clearance from terrain during a hover-taxi, which resulted in the helicopter's skid contacting grass and a subsequent dynamic roll-over.
- [NTSB GAA20CA002](https://openairdocs.org/ntsb/GAA20CA002.md): Robinson R44 · Carlsbad, CA · Accident · No injuries · Data collection · Final report · Oct 2, 2019 · N4050X · Substantial damage
  > The student pilot's incorrect collective and cyclic applications during landing and the flight instructor's delayed remedial action, which resulted in a roll-over.
- [NTSB GAA19CA519](https://openairdocs.org/ntsb/GAA19CA519.md): Bell 206 · San Diego, CA · Accident · No injuries · Data collection · Final report · Aug 27, 2019 · N218GH · Substantial damage
  > The pilot's failure to maintain yaw and pitch control while repositioning the helicopter, which resulted in dynamic rollover.
- [NTSB WPR18LA004](https://openairdocs.org/ntsb/WPR18LA004.md): Western International Avia UH 1H · Arbuckle, CA · Accident · No injuries · Class 3 · Limited · Final report · Oct 13, 2017 · N247PV · Substantial damage
  > A collective control malfunction for reasons that could not be determined.
- [NTSB GAA17CA551](https://openairdocs.org/ntsb/GAA17CA551.md): Robinson Helicopter R22 · Santa Barbara, CA · Accident · No injuries · Data collection · Final report · Sep 24, 2017 · N177SR · Substantial damage
  > The student pilot’s unstabilized hover, which resulted in ground contact and a dynamic rollover. Contributing to the accident was the flight instructor’s delayed remedial action.
- [NTSB WPR15CA119](https://openairdocs.org/ntsb/WPR15CA119.md): Robinson Helicopter R22 Beta · San Bernardino, CA · Accident · Minor injuries · Data collection · Final report · Mar 3, 2015 · N4003S · Substantial damage
  > The pilot's failure to maintain adequate clearance from the ground, which resulted in a loss of control and subsequent dynamic rollover.
- [NTSB WPR14CA319](https://openairdocs.org/ntsb/WPR14CA319.md): Bell 206B · Salinas, CA · Accident · No injuries · Data collection · Final report · Jul 19, 2014 · N291SH · Substantial damage
  > The pilot's failure to ensure adequate clearance from ground obstacles during takeoff which resulted in loss of aircraft control.
- [NTSB WPR14CA256](https://openairdocs.org/ntsb/WPR14CA256.md): Robinson Helicopter R22 Beta · Long Beach, CA · Accident · No injuries · Data collection · Final report · Jun 20, 2014 · N681SH · Substantial damage
  > The pilot's failure to maintain aircraft control while maneuvering for landing.
- [NTSB WPR14LA225](https://openairdocs.org/ntsb/WPR14LA225.md): Emery Mark Rotorway 162F · Merced, CA · Accident · No injuries · Limited investigation · Final report · Jun 4, 2014 · N78291 · Destroyed
  > The helicopter pilot/owner's decision to install a belt type not recommended by the kit manufacturer in the tail rotor drive system using the incorrect tension values, which led to the belt’s in-flight failure and the subsequent loss of tail rotor drive…
- [NTSB WPR14CA196](https://openairdocs.org/ntsb/WPR14CA196.md): Bell 47G · Bakersfield, CA · Accident · No injuries · Data collection · Final report · May 18, 2014 · N16414 · Substantial damage
  > The pilot's failure to maintain aircraft control after the helicopter's skid catching on the side of a trailer during takeoff, which resulted in a dynamic rollover.
- [NTSB WPR14LA180](https://openairdocs.org/ntsb/WPR14LA180.md): Bell 47G · El Monte, CA · Accident · Minor injuries · Limited investigation · Final report · May 3, 2014 · N7895B · Substantial damage
  > A partial loss of engine power during climbout due to a malfunctioning magneto and spark plugs.
- [NTSB WPR13FA264](https://openairdocs.org/ntsb/WPR13FA264.md): Robinson Helicopter R44 II · Los Angeles, CA · Accident · Minor injuries · Field investigation · Final report · Jun 6, 2013 · N915BW · Substantial damage
  > The pilot’s loss of helicopter control following a precautionary landing, which resulted in a dynamic rollover.
- [NTSB WPR12FA298](https://openairdocs.org/ntsb/WPR12FA298.md): Robinson Helicopter R22 Beta · Murrieta, CA · Accident · 1 fatal · Field investigation · Final report · Jul 9, 2012 · N7527Y · Substantial damage
  > The pilot's failure to maintain clearance from high vegetation while making a hovering turn, which resulted in a dynamic rollover.
- [NTSB WPR11LA190](https://openairdocs.org/ntsb/WPR11LA190.md): Bell 47G · Torrance, CA · Accident · Minor injuries · Limited investigation · Final report · Apr 6, 2011 · N9FK · Substantial damage
  > The pilot did not maintain adequate altitude during takeoff, which resulted in ground contact and a dynamic rollover.
- [NTSB WPR11CA011](https://openairdocs.org/ntsb/WPR11CA011.md): Robinson Helicopter R22 Beta · Long Beach, CA · Accident · Serious injuries · Data collection · Final report · Oct 12, 2010 · N853DS · Substantial damage
  > The student pilot's failure to maintain an adequate drift control and skid clearance from the ground and the CFI's inadequate supervision while hovering, resulting in dynamic rollover.
- [NTSB WPR10LA458](https://openairdocs.org/ntsb/WPR10LA458.md): Robinson Helicopter R44 II · Mammoth, CA · Accident · Serious injuries · Limited investigation · Final report · Sep 16, 2010 · N2153S · Substantial damage
  > Dynamic rollover of the helicopter during a precautionary landing.
- [NTSB WPR10CA065](https://openairdocs.org/ntsb/WPR10CA065.md): Robinson Helicopter R22 Beta · Long Beach, CA · Accident · No injuries · Data collection · Final report · Nov 25, 2009 · N505LA · Substantial damage
  > The flight instructor's failure to arrest the helicopter's descent and to maintain lateral control during a hovering autorotation practice.

## 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."eventStateOrRegion" = 'CA' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '231' 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/231/sequence?state=CA

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