# NTSB investigations: Bell 206-L4: Hard landing

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 WPR24FA132](https://openairdocs.org/ntsb/WPR24FA132.md): Bell 206-L4 · Anaconda, MT · Accident · 1 fatal · Class 3 · Field · Final report · Apr 26, 2024 · N988B · Destroyed
  > A total loss of engine power due to a loss of cooling oil to the turbine-to-compressor coupling shaft and subsequent fracture of the shaft at an altitude too low for the pilot to complete a successful autorotation. Contributing to the accident was carbon…
- [NTSB WPR23LA059](https://openairdocs.org/ntsb/WPR23LA059.md): Bell 206-L4 · Ft Worth, TX · Accident · No injuries · Class 4 · Limited · Final report · Dec 7, 2022 · N2036F · Substantial damage
  > The pilot’s improper landing flare, which resulted in a hard landing. Contributing to the accident, was the flight instructor’s inadequate supervision.
- [NTSB WPR14LA374](https://openairdocs.org/ntsb/WPR14LA374.md): Bell 206 · Tombstone, AZ · Accident · No injuries · Limited investigation · Final report · Sep 12, 2014 · N64AW · Substantial damage
  > A partial loss of engine power during cruise flight due to loose “B” nut fittings and a bent tube as a result of maintenance personnel’s inadequate inspection of the nuts during the most recent inspection.
- [NTSB CEN13CA276](https://openairdocs.org/ntsb/CEN13CA276.md): Bell 206-L4 · Fort Worth, TX · Accident · No injuries · Data collection · Final report · May 10, 2013 · N2036F · Substantial damage
  > The flight instructor's inadequate supervision and delayed remedial action during a practice autorotation, which resulted in a hard landing.
- [NTSB ERA11LA297](https://openairdocs.org/ntsb/ERA11LA297.md): Bell 206-L4 · Mobile Block 114CC · Accident · Serious injuries · Limited investigation · Final report · May 13, 2011 · N266P · Substantial damage
  > The pilot’s operation of the helicopter with a left, quartering headwind, resulting in conditions conducive to a loss of tail rotor effectiveness.

## 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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('1182110')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s.case_mkey = x.case_mkey AND s.aircrafts_position = x.position AND s."tier2Number" = '092' 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/092/sequence?model=1182110

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