# NTSB investigations: Rolls-Royce 250-C20B: Low altitude operation/event

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 CEN24LA276](https://openairdocs.org/ntsb/CEN24LA276.md): Bell 206 · Cornland, IL · Accident · No injuries · Class 4 · Limited · Final report · Jul 21, 2024 · N26UK · Substantial damage
  > The pilot was unable to see a wire due to the setting sun and the helicopter subsequently struck the wire.
- [NTSB ERA23LA326](https://openairdocs.org/ntsb/ERA23LA326.md): Hughes 369 · Elberon, VA · Accident · Serious injuries · Class 4 · Limited · Final report · Aug 5, 2023 · N353AH · Substantial damage
  > The pilot’s failure to maintain clearance from a power line structure arm, which resulted in main rotor blade contact.
- [NTSB CEN23LA342](https://openairdocs.org/ntsb/CEN23LA342.md): Bell 206B · Denison, IA · Accident · 1 fatal · Class 4 · Limited · Final report · Jul 30, 2023 · N231RL · Substantial damage
  > The pilot’s inflight distraction, which resulted in his failure to see and avoid wires.
- [NTSB CEN23LA308](https://openairdocs.org/ntsb/CEN23LA308.md): Hughes 369D · Atchison, KS · Accident · No injuries · Class 4 · Limited · Final report · Jul 13, 2023 · N533DR · Substantial damage
  > The pilot’s failure to adequately survey a field for obstructions prior to a low-level aerial application pass, which resulted in an impact with a powerline.
- [NTSB GAA19CA278](https://openairdocs.org/ntsb/GAA19CA278.md): Bell 206 · Pittsfield, IL · Accident · Minor injuries · Data collection · Final report · May 23, 2019 · N158H · Substantial damage
  > The pilot's failure to maintain clearance from rising terrain during agricultural application operations.
- [NTSB CEN18FA182](https://openairdocs.org/ntsb/CEN18FA182.md): MD Helicopter 369D · Luling, LA · Accident · 1 fatal · Field investigation · Final report · May 20, 2018 · N362JS · Destroyed
  > The pilot's failure to maintain clearance from the powerline structure while hovering, which resulted in an inadvertent collision with the structure and an uncontrolled descent into terrain.
- [NTSB WPR13CA204](https://openairdocs.org/ntsb/WPR13CA204.md): Bell 206B · Wells, NV · Accident · No injuries · Data collection · Final report · Apr 20, 2013 · N4237M · Substantial damage
  > The pilot's failure to maintain clearance from an obstacle while maneuvering at a low altitude.
- [NTSB CEN10CA428](https://openairdocs.org/ntsb/CEN10CA428.md): Bell 206B · New Hampton, IA · Accident · No injuries · Data collection · Final report · Jul 23, 2010 · N40TA · Substantial damage
  > The pilot's failure to maintain clearance from wires.

## 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.engine_model_code IN ('54385')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e."isDefiningEvent" AND e."tier2Number" = '220'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/220/cases?engine=54385

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