# NTSB investigations, TN: 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 ERA21LA335](https://openairdocs.org/ntsb/ERA21LA335.md): Hummer 260L · Livingston, TN · Accident · No injuries · Class 3 · Limited · Final report · Aug 18, 2021 · N777TC · Substantial damage
  > A total loss of engine power for reasons that could not be determined. Contributing to the accident was the pilot’s operation of the helicopter in a flight regime that would not allow for a successful autorotative landing.
- [NTSB ERA21LA121](https://openairdocs.org/ntsb/ERA21LA121.md): Robinson Helicopter R66 · Knoxville, TN · Accident · No injuries · Class 4 · Limited · Final report · Jan 30, 2021 · N660TN · Substantial damage
  > The pilot’s failure to maintain directional control of the helicopter, which resulted in rear portion of the right skid contacting the ground and a subsequent dynamic rollover.
- [NTSB GAA19CA463](https://openairdocs.org/ntsb/GAA19CA463.md): Hughes 269A · Springfield, TN · Accident · No injuries · Data collection · Final report · Jul 24, 2019 · N269RR · Substantial damage
  > The pilot’s failure to maintain helicopter control and a loss of tail rotor effectiveness while hover-taxiing and turning toward a taxiway in gusting crosswind conditions, which resulted in a dynamic rollover.
- [NTSB ERA18LA020](https://openairdocs.org/ntsb/ERA18LA020.md): Bell 206 · Union City, TN · Accident · Minor injuries · Class 3 · Limited · Final report · Nov 8, 2017 · N275AE · Substantial damage
  > The pilot’s inadvertent slope landing and attempted recovery, which resulted in an incipient dynamic rollover, mast bumping, and separation of the main rotor.
- [NTSB ERA10CA495](https://openairdocs.org/ntsb/ERA10CA495.md): Skykits Savannah · Springville, TN · Accident · No injuries · Data collection · Final report · Sep 20, 2010 · N63XT · Substantial damage
  > Collision with an unknown object during 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" = 'TN' 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=TN

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.