# NTSB investigations, 2011: 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 ANC11LA108](https://openairdocs.org/ntsb/ANC11LA108.md): Eurocopter AS 350 BA · Juneau, AK · Accident · No injuries · Limited investigation · Final report · Sep 26, 2011 · N230CH · Substantial damage
  > Upslope wind conditions while the helicopter was operating at ground idle, which resulted in the helicopter rollover. Contributing to the accident was the lack of manufacturer data regarding the effect of upslope wind conditions on helicopter ground idle…
- [NTSB CEN11CA627](https://openairdocs.org/ntsb/CEN11CA627.md): Robinson Helicopter R44 · Batesville, TX · Accident · No injuries · Data collection · Final report · Aug 26, 2011 · N99FJ · Substantial damage
  > The pilot’s inadequate preflight inspection that failed to ensure all tie-down clamps were removed prior to takeoff, which resulted in the helicopter’s dynamic rollover.
- [NTSB CEN11CA524](https://openairdocs.org/ntsb/CEN11CA524.md): Texas Helicopter OH-13H/M74A · Creston, IL · Accident · Minor injuries · Data collection · Final report · Jul 28, 2011 · N10009 · Substantial damage
  > The pilot's failure to maintain adequate skid clearance from the helicopter cart during landing, resulting in a dynamic rollover.
- [NTSB CEN11CA303](https://openairdocs.org/ntsb/CEN11CA303.md): Bell 206 · Venice, LA · Accident · Minor injuries · Data collection · Final report · Apr 13, 2011 · N887T · Substantial damage
  > The pilot's improper use of the collective and cyclic control during taxi operations, which induced 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 ERA11CA201](https://openairdocs.org/ntsb/ERA11CA201.md): Schweizer 269C-1 · Mount Pocono, PA · Accident · No injuries · Data collection · Final report · Mar 20, 2011 · N153HT · Substantial damage
  > The flight instructor's selection of an unsuitable landing site to practice autorotations, which resulted in an inadvertent dynamic rollover during touchdown.
- [NTSB CEN11CA213](https://openairdocs.org/ntsb/CEN11CA213.md): Robinson Helicopter R44 II · Glenwood Springs, CO · Accident · No injuries · Data collection · Final report · Mar 1, 2011 · N74816 · Substantial damage
  > The pilot’s improper takeoff procedure, which resulted in a dynamic rollover when the left skid contacted the ground.
- [NTSB CEN11CA167](https://openairdocs.org/ntsb/CEN11CA167.md): Robinson Helicopter R22 Beta · Anoka, MN · Accident · Serious injuries · Data collection · Final report · Jan 29, 2011 · N7195B · Substantial damage
  > The student pilot's control inputs that resulted in an inadvertent dynamic rollover and the CFI's inadequate supervision of the flight.

## 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 year(c."eventDate") = 2011
  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?year=2011

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