# 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 CHI92LA042](https://openairdocs.org/ntsb/CHI92LA042.md): Cessna 152 · Fargo, ND · Accident · Minor injuries · Limited investigation · Final report · Dec 23, 1991 · N757YK · Substantial damage
  > The pilot's improper interpretation of instructions issued by air traffic control specialist, and the pilot's poor inflight planning and decision(s). Factors associated with the accident are the confusing communications by the air traffic control specialist,…
- [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 CHI91DTG08](https://openairdocs.org/ntsb/CHI91DTG08.md): Grumman G164B · Minto, ND · Accident · No injuries · Final report · Aug 17, 1991 · N8351K · Substantial damage
  > Inadequate aircraft servicing, inadequate aircraft preflight, fuel contamination, and unsuitable soft terrain in which to effect an emergency landing.
- [NTSB CHI91DTG07](https://openairdocs.org/ntsb/CHI91DTG07.md): Ayres S2R · Drayton, ND · Accident · No injuries · Final report · Aug 7, 1991 · N4010H · Substantial damage
  > Misjudged clearance by the pilot. A factor related to the accident is overconfidence in personal ability.
- [NTSB CHI91DTG06](https://openairdocs.org/ntsb/CHI91DTG06.md): Ayres S2R · Drayton, ND · Accident · No injuries · Final report · Jul 20, 1991 · N8988Q · Substantial damage
  > That the pilot did not perform any preflight planning, and did not use the aircraft performance data.
- [NTSB CHI91DTG05](https://openairdocs.org/ntsb/CHI91DTG05.md): Cessna T188C · Bathgate, ND · Accident · No injuries · Final report · Jul 19, 1991 · N2056J · Substantial damage
  > A loss of control inflight which resulted in a collision with the crop.
- [NTSB CHI91DTG04](https://openairdocs.org/ntsb/CHI91DTG04.md): Cessna T188C · Walhalla, ND · Accident · No injuries · Final report · Jul 17, 1991 · N2093J · Substantial damage
  > Inadequate compensation for wind conditions, and failure to maintain directional control. Factors related to the accident are gusty crosswind conditions.
- [NTSB CHI91DTG02](https://openairdocs.org/ntsb/CHI91DTG02.md): Sikorsky H-19-UH19D · Mcclusky, ND · Accident · No injuries · Final report · Jun 18, 1991 · N6735 · Substantial damage
  > Failure of the engine blower/supercharger assembly. A factor related to the accident was: no suitable terrain in which to make an immediate emergency landing.
- [NTSB CHI91DTG03](https://openairdocs.org/ntsb/CHI91DTG03.md): Schweizer G164 · Gwinner, ND · Accident · No injuries · Final report · Jun 16, 1991 · N48687 · Substantial damage
  > Inadvertent closing of the mixture by the pilot. Factors related to the accident are inadequate control shape, or size, and inattentiveness of the pilot.
- [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.
- [NTSB CHI91LA163](https://openairdocs.org/ntsb/CHI91LA163.md): Cessna 180 · Devils Lake, ND · Accident · No injuries · Limited investigation · Final report · May 26, 1991 · N115F · Substantial damage
  > Directional control not maintained by the pilot. A factor related to the accident was a crosswind condition.
- [NTSB CHI91LA156](https://openairdocs.org/ntsb/CHI91LA156.md): Piper PA-28R-201 · Grand Forks, ND · Accident · No injuries · Limited investigation · Final report · May 14, 1991 · N804ND · Substantial damage
  > The pilot's failure to maintain directional control during the landing roll. Related to the accident was the pilot's lack of total experience.
- [NTSB CHI91LA134](https://openairdocs.org/ntsb/CHI91LA134.md): Piper PA-28-161 · Grand Forks, ND · Accident · No injuries · Limited investigation · Final report · Apr 16, 1991 · N143ND · 2 aircraft · Substantial damage
  > Inadequate visual outlook by the pilot in command.
- [NTSB CHI91LA075](https://openairdocs.org/ntsb/CHI91LA075.md): Cessna 150 · Rolla, ND · Accident · No injuries · Limited investigation · Final report · Jan 18, 1991 · N18583 · Substantial damage
  > Compensation for wind was inadequate anad directional control not maintain by the PIC. Contributing factors were: snow covered runway, gusty crosswind, and a snowbank.

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

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