# NTSB investigations: Helton LARK 95

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 CHI08LA166](https://openairdocs.org/ntsb/CHI08LA166.md): Helton Lark 95 · West Carrollton, OH · Accident · 1 fatal · Limited investigation · Final report · Jun 17, 2008 · N86657 · Destroyed
  > The improper installation of spark plugs during the annual inspection which resulted in a loss of engine power shortly after takeoff. Contributing to the accident was the lack of suitable terrain during the forced landing.
- [NTSB SEA77DYE13](https://openairdocs.org/ntsb/SEA77DYE13.md): Helton LARK95 · Federal Way, WA · Accident · Minor injuries · Closed · Mar 19, 1977 · N1511H · Destroyed
- [NTSB LAX67A0109](https://openairdocs.org/ntsb/LAX67A0109.md): Helton LARK95 · Ft Mcdowell, AZ · Accident · 1 fatal · Closed · May 22, 1967 · N1509H · Destroyed
- [NTSB DEN67F0098](https://openairdocs.org/ntsb/DEN67F0098.md): Lark 95 · Deming, NM · Accident · No injuries · Closed · Sep 21, 1966 · N9726C · Substantial damage

## 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 ('4331020'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=4331020

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