# NTSB investigations: Allison 250-C20B, PA

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 ERA12CA304](https://openairdocs.org/ntsb/ERA12CA304.md): Bell 206B · Hershey, PA · Accident · Serious injuries · Data collection · Final report · Apr 27, 2012 · N16EP · Substantial damage
  > The pilot's diverted attention while performing aerial application at low altitude, which resulted in controlled flight into terrain. Contributing to the accident was the pilot’s failure to adjust the control friction to the position he was accustomed.
- [NTSB ERA09LA031](https://openairdocs.org/ntsb/ERA09LA031.md): Hughes 369D · Carroll Township, PA · Accident · Serious injuries · Limited investigation · Final report · Oct 30, 2008 · N606AS · Substantial damage
  > A total loss of engine power due to the improper assembly of the compressor discharge tubes to the combustion liner.
- [NTSB BFO94LA155](https://openairdocs.org/ntsb/BFO94LA155.md): Hughes 369D · Butler, PA · Accident · No injuries · Limited investigation · Final report · Aug 28, 1994 · N5027P · Substantial damage
  > The malfunction of the emergency fuel vent and the exhaustion of the fuel supply which resulted in the loss of engine power.
- [NTSB NYC84LA204](https://openairdocs.org/ntsb/NYC84LA204.md): Hughes 500D · Bedford, PA · Accident · No injuries · Limited investigation · Final report · Jun 7, 1984 · N5106Y · Substantial damage
  > According to the plt, the helicopter took off with under 200 lbs of fuel indicating on the fuel gage. Fifteen minutes after takeoff at 125 ft AGL the engine out warning system indicated an engine failure. The acft began to rotate about its vetical axis and…

## 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" = 'PA' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03081'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=03081&state=PA

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