# NTSB investigations, IL: 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 CEN21LA432](https://openairdocs.org/ntsb/CEN21LA432.md): Bell 206L-3 · Berlin, IL · Accident · No injuries · Class 4 · Limited · Final report · Jul 9, 2021 · N170AM · Substantial damage
  > The pilot’s failure to maintain control of the helicopter with a stuck skid, which resulted in a dynamic rollover.
- [NTSB GAA19CA279](https://openairdocs.org/ntsb/GAA19CA279.md): Guimbal Cabri · St. Louis, IL · Accident · No injuries · Data collection · Final report · May 23, 2019 · N369PA · Substantial damage
  > The flight instructor's improper emergency procedure instruction to the student pilot, which resulted in the student improperly using the throttle to correct the loss of yaw control, which resulted in ground impact and a dynamic rollover.
- [NTSB CEN16LA096](https://openairdocs.org/ntsb/CEN16LA096.md): Raymond Z Brown Condor · Centralia, IL · Accident · 1 fatal · Limited investigation · Final report · Feb 1, 2016 · N41852 · Substantial damage
  > The failure of the prerotator belt, which impeded the engine's timing belt and resulted in a loss of engine power at low altitude.
- [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 CEN10CA537](https://openairdocs.org/ntsb/CEN10CA537.md): Lewis Brandon Scott Exterminator · Rockford, IL · Accident · Minor injuries · Data collection · Final report · Sep 12, 2010 · N815SL · Substantial damage
  > The pilot's failure to maintain control of the gyrocopter while practicing takeoffs and landings.

## 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" = 'IL' 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=IL

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