# NTSB investigations, CA: 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 WPR26LA194](https://openairdocs.org/ntsb/WPR26LA194.md): Autogyro Cavalon · Palo Alto, CA · Accident · Minor injuries · Class 4 · Limited · Final report · May 13, 2026 · N40CT · Substantial damage
  > The pilot’s failure to maintain directional control during the landing roll, in gusting crosswind conditions.
- [NTSB WPR20CA092](https://openairdocs.org/ntsb/WPR20CA092.md): Bell OH 58A · Colexico, CA · Accident · No injuries · Data collection · Final report · Feb 19, 2020 · N288NS · Substantial damage
  > The pilot's failure to arrest the descent rate while maneuvering at low altitude, which resulted in impact with terrain.
- [NTSB WPR20LA007](https://openairdocs.org/ntsb/WPR20LA007.md): Hiller UH 12E · Susanville, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Oct 14, 2019 · N131HA · Substantial damage
  > A partial loss of engine power due to multiple overtemperature events and a hot start event, which resulted in thermally damaged internal components of the engine. Contributing to the accident was the lack of suitable terrain on which to perform the forced…
- [NTSB GAA19CA186](https://openairdocs.org/ntsb/GAA19CA186.md): Bell 206 · Valley Center, CA · Accident · Serious injuries · Data collection · Final report · Mar 29, 2019 · N83181 · Substantial damage
  > The ground crew’s attachment of the load fill hose to the helicopter without telling the pilot, which resulted in a loss of helicopter control during takeoff.
- [NTSB GAA18CA213](https://openairdocs.org/ntsb/GAA18CA213.md): Hawley Richard A1B · Lincoln, CA · Accident · Minor injuries · Data collection · Final report · Apr 13, 2018 · N5249H · Substantial damage
  > The pilot’s failure to maintain directional control during takeoff.
- [NTSB WPR18CA048](https://openairdocs.org/ntsb/WPR18CA048.md): Cessna 172P · Valley Springs, CA · Accident · Serious injuries · Data collection · Final report · Dec 14, 2017 · N54873 · Substantial damage
  > The pilot's failure to maintain clearance from trees while maneuvering for landing and his decision to land on a surface with obstructions.
- [NTSB WPR17LA211](https://openairdocs.org/ntsb/WPR17LA211.md): Robinson Helicopter R22 · Long Beach, CA · Accident · Serious injuries · Limited investigation · Final report · Sep 20, 2017 · N7514S · Substantial damage
  > The student pilot's failure to maintain rotor rpm during the crosswind landing approach and his subsequent improper decision to initiate an autorotation instead of applying corrective control inputs after the helicopter experienced normal airframe vibration.…
- [NTSB GAA17CA404](https://openairdocs.org/ntsb/GAA17CA404.md): Eurocopter AS 350 · King Vale, CA · Accident · Minor injuries · Data collection · Final report · Jul 11, 2017 · N357PJ · Substantial damage
  > The pilot’s failure to maintain clearance from trees while landing in a dusty, unimproved landing zone.
- [NTSB GAA16CA339](https://openairdocs.org/ntsb/GAA16CA339.md): Hughes 269B · Princeton, CA · Accident · Minor injuries · Data collection · Final report · Jun 21, 2016 · N941BD · Substantial damage
  > The uncertificated pilot's failure to maintain pitch and directional control, which resulted in an impact with terrain and a rollover.
- [NTSB WPR15LA194](https://openairdocs.org/ntsb/WPR15LA194.md): Grumman Acft ENG Cor-Schweizer G 164A · Five Points, CA · Accident · Minor injuries · Limited investigation · Final report · Jun 21, 2015 · N8598H · Substantial damage
  > Maintenance personnel’s improper reassembly of the engine during overhaul, which led to the failure of the supercharger-blower due to a lack of lubrication and the subsequent total loss of engine power during takeoff.
- [NTSB WPR14CA364](https://openairdocs.org/ntsb/WPR14CA364.md): Flight Design Ctls LSA · Grass Valley, CA · Accident · No injuries · Data collection · Final report · Sep 3, 2014 · N245LS · Substantial damage
  > The pilot's inadequate flare which resulted in a loss of aircraft control during landing.
- [NTSB WPR14TA357](https://openairdocs.org/ntsb/WPR14TA357.md): Airbus Helicopters AS 350 B3 · Hemet, CA · Accident · Minor injuries · Final report · Aug 28, 2014 · N991SD · Substantial damage
  > The flight instructor's failure to adequately brief and demonstrate the simulated emergency procedure to the pilot under instruction and his delayed remedial action and inadequate supervision during the maneuver, which resulted in an excessive sink rate and a…
- [NTSB WPR12LA426](https://openairdocs.org/ntsb/WPR12LA426.md): Bell 206 - B · Mammoth Lakes, CA · Accident · No injuries · Limited investigation · Final report · Sep 19, 2012 · N222GR · Destroyed
  > The pilot’s inability to maintain sufficient main rotor rpm while maneuvering in high density altitude conditions, which resulted in a precautionary landing and subsequent rollover.
- [NTSB WPR12LA140](https://openairdocs.org/ntsb/WPR12LA140.md): Robinson Helicopter R22 Beta · Palo Alto, CA · Accident · Minor injuries · Limited investigation · Final report · Mar 15, 2012 · N290SH · Substantial damage
  > The pilot's improper use of the throttle grip, which resulted in the deactivation of the rpm governor and a loss of rotor rpm.
- [NTSB WPR11LA423](https://openairdocs.org/ntsb/WPR11LA423.md): Arrow Falcon Exporters UH-1H · Stockton, CA · Accident · Minor injuries · Limited investigation · Final report · Sep 2, 2011 · N205PJ · Substantial damage
  > A total loss of engine power due to the separation of a tooth from the starter-generator drive gear, which resulted in failure of the engine oil pump and subsequent oil starvation.
- [NTSB WPR10CA278](https://openairdocs.org/ntsb/WPR10CA278.md): Robinson R22 · La Verne, CA · Accident · No injuries · Data collection · Final report · Jun 5, 2010 · N7028U · Substantial damage
  > A loss of engine power due to the pilot's inadvertent movement of the mixture control.
- [NTSB WPR09LA373](https://openairdocs.org/ntsb/WPR09LA373.md): Grumman G164 · Riverdale, CA · Accident · Minor injuries · Limited investigation · Final report · Jul 28, 2009 · N8741H · Substantial damage
  > The partial loss of engine power due to the failure of the engine's supercharger-blower.
- [NTSB WPR09CA339](https://openairdocs.org/ntsb/WPR09CA339.md): Robinson Helicopter R44 · Marysville, CA · Accident · No injuries · Data collection · Final report · Jul 13, 2009 · N244HP · Substantial damage
  > The pilot’s failure to maintain adequate clearance from the power line wires.
- [NTSB WPR09LA161](https://openairdocs.org/ntsb/WPR09LA161.md): Brown Barnett J4B · Sheridan, CA · Accident · No injuries · Limited investigation · Final report · Mar 20, 2009 · N35JB · Substantial damage
  > A loss of engine power due to carburetor icing as a result of the pilot's failure to use carburetor heat.
- [NTSB WPR09CA023](https://openairdocs.org/ntsb/WPR09CA023.md): Robinson Helicopter R22 Beta · Temecula, CA · Accident · No injuries · Data collection · Final report · Oct 22, 2008 · N8356R · Substantial damage
  > The certified flight instructor's failure to maintain adequate rotor rpm during a simulated approach to landing under variable wind, and high density altitude conditions.
- [NTSB LAX08LA200](https://openairdocs.org/ntsb/LAX08LA200.md): Sikorsky S-76A · Santa Maria, CA · Accident · Minor injuries · Limited investigation · Final report · Jun 27, 2008 · N343AA · Substantial damage
  > The copilot's misjudged clearance from an object during a hovering turn for landing. Contributing to the accident were the inadequately marked heliport surface and the close proximity of an obstruction near the landing area.
- [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.

## 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" = '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?state=CA

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