# NTSB investigations, 2021: 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 ANC21LA083](https://openairdocs.org/ntsb/ANC21LA083.md): Mcdonnell Douglas Helicopter 369E · Delta Junction, AK · Accident · Minor injuries · Class 4 · Limited · Final report · Sep 7, 2021 · N125KW · Substantial damage
  > The pilot’s inability to maintain lateral control during the takeoff, which resulted in dynamic rollover. Contributing to the accident was the pilot’s decision to utilize an unsuitable landing area for flight operations.
- [NTSB ANC21LA080](https://openairdocs.org/ntsb/ANC21LA080.md): Robinson Helicopter R44 II · Pelican, AK · Accident · No injuries · Class 4 · Limited · Final report · Aug 31, 2021 · N779DZ · Substantial damage
  > The pilot’s loss of control while landing on a remote helipad.
- [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 ERA21LA332](https://openairdocs.org/ntsb/ERA21LA332.md): Rotorway Exec 162 · Lindale, GA · Accident · No injuries · Class 4 · Limited · Final report · Aug 18, 2021 · N162LR · Substantial damage
  > The pilot's improper judgment of the helicopter’s height above ground during the landing flare, which resulted in a hard landing with forward airspeed and subsequent bounce and rollover.
- [NTSB GAA21WA098](https://openairdocs.org/ntsb/GAA21WA098.md): Robinson R44 · Región de Ñuble, Chile · Accident · No injuries · Class 5 · Foreign · Apr 29, 2021 · CC-PPZ · Substantial damage
- [NTSB CEN21LA169](https://openairdocs.org/ntsb/CEN21LA169.md): Bell OH-58 · Pottsboro, TX · Accident · Minor injuries · Class 4 · Limited · Final report · Mar 27, 2021 · N1045C · Substantial damage
  > The pilot failure to maintain directional control of the helicopter when it encountered an unanticipated wind allowing it to drift into a fence and subsequently roll over and impact terrain.
- [NTSB GAA21WA069](https://openairdocs.org/ntsb/GAA21WA069.md): Rotorway Exec · Ledbury, Herefordshire, United Kingdom · Accident · No injuries · Class 5 · Foreign · Feb 1, 2021 · G-JDHN · Substantial damage
- [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.

## 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") = 2021
  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?year=2021

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