# NTSB investigations: Volkswagen CONVERSION, MT

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 WPR09LA286](https://openairdocs.org/ntsb/WPR09LA286.md): Wermling KR-2 Rand Robinson · Anaconda, MT · Accident · Serious injuries · Limited investigation · Final report · Jun 13, 2009 · N40908 · Substantial damage
  > The non-certificated pilot’s failure to maintain airspeed and aircraft control during initial climb resulting in a stall/spin.
- [NTSB SEA98LA192](https://openairdocs.org/ntsb/SEA98LA192.md): Mayala Dragonfly · Avon, MT · Accident · Minor injuries · Limited investigation · Final report · Sep 30, 1998 · N4478V · Destroyed
  > Failure of the engine crankshaft aft oil seal resulting in the loss of engine oil, and rough terrain during the forced landing.
- [NTSB DEN86LA236](https://openairdocs.org/ntsb/DEN86LA236.md): Mayala Dragonfly · Helena, MT · Accident · Serious injuries · Limited investigation · Final report · Aug 25, 1986 · N4478V · Substantial damage
  > The acft was on final apch after completing a x-country from billings, MT, when the accident occurred. The plt stated the acft was low after intercepting the VASI so power was added; however, the eng did not respond. The acft struck a small hill 300 ft short…

## 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" = 'MT' 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 ('63501'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=63501&state=MT

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