# Fatal NTSB investigations, 1991, ND

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 CHI91FA291](https://openairdocs.org/ntsb/CHI91FA291.md): Beech 95 · Killdeer, ND · Accident · 2 fatal · Field investigation · Final report · Sep 11, 1991 · N393B · Destroyed
  > The pilot's disregarding the weather forecast; his improper in-flight decision to continue a VFR flight into instrument meteorological conditions; and his failure to maintain adequate clearance from terrain. The mountainous hilly terrain and low ceiling were…
- [NTSB CHI91DTG01](https://openairdocs.org/ntsb/CHI91DTG01.md): Cessna 172P · Bismarck, ND · Accident · 1 fatal · Final report · Jun 1, 1991 · N5478K · Destroyed
  > Spatial disorientation. Factors related to the accident are failure to obtain a preflight weather brief, vrf flight into IMC conditions and lack of total experience.

## 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 year(c."eventDate") = 1991
  AND c."eventStateOrRegion" = 'ND' AND c."eventCountry" = 'USA'
  AND c."highestInjuryLevel" = 'Fatal'
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?fatal=1&state=ND&year=1991

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OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.