# Final NTSB investigations: Grumman Acft ENG Cor-Schweizer G-164B, 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 CEN14LA358](https://openairdocs.org/ntsb/CEN14LA358.md): Grumman Acft ENG Cor-Schweizer G-164B · Garrison, ND · Accident · No injuries · Limited investigation · Final report · Jul 9, 2014 · N6648Q · Substantial damage
  > Excessive wear between the power turbine shaft and quill shaft spline, which led to the disconnection of the power turbine wheel, an overspeed of the power turbine, and the subsequent loss of engine power. Contributing to the accident was maintenance…
- [NTSB CHI05LA176](https://openairdocs.org/ntsb/CHI05LA176.md): Schweizer G-164B · Buxton, ND · Accident · No injuries · Limited investigation · Final report · Jul 7, 2005 · N6631Q · Substantial damage
  > A loss of engine power on takeoff due to undetermined reasons. A factor was the ditch that the airplane contacted during the forced landing.
- [NTSB CHI04CA151](https://openairdocs.org/ntsb/CHI04CA151.md): Grumman-Schweizer G-164B · Hope, ND · Accident · No injuries · Data collection · Final report · Jun 10, 2004 · N48517 · Substantial damage
  > The pilot's failure to maintain clearance from the tree branches during the aerial-application flight. A factor to the accident was the trees.
- [NTSB CHI01LA273](https://openairdocs.org/ntsb/CHI01LA273.md): Grumman G-164B · Hazelton, ND · Accident · 1 fatal · Limited investigation · Final report · Aug 11, 2001 · N48624 · Destroyed
  > the pilot's ostentatious display when he performed a low level manuever and stalled the airplane.
- [NTSB CHI99LA215](https://openairdocs.org/ntsb/CHI99LA215.md): Grumman-Schweizer G-164B · Page, ND · Accident · No injuries · Limited investigation · Final report · Jul 3, 1999 · N6633K · Substantial damage
  > the pilot's failure to compensate for the wind conditions. Factors were the sudden windshift and the crops.
- [NTSB CHI99LA162](https://openairdocs.org/ntsb/CHI99LA162.md): Grumman-Schweizer G-164B · Buxton, ND · Accident · No injuries · Limited investigation · Final report · May 25, 1999 · N6524K · Substantial damage
  > the number one cylinder's separation, the pilot's visual lookout not possible through the oil given off by the number one cylinder, and the embankment. A factor in the accident was the oil.
- [NTSB CHI97LA278](https://openairdocs.org/ntsb/CHI97LA278.md): Schweizer G-164B · Larimore, ND · Accident · 1 fatal · Limited investigation · Final report · Sep 3, 1997 · N8326K · Destroyed
  > the pilot delaying the swath run turnaround maneuver at the end of the field boundary, and his failure to maintain clearance between the airplane and the high tension wires. A factor was the pilot's inattentiveness regarding the time to begin the swath run…
- [NTSB CHI95LA217](https://openairdocs.org/ntsb/CHI95LA217.md): Schweizer G-164B · Kenmare, ND · Accident · Serious injuries · Limited investigation · Final report · Jul 11, 1995 · N6623Q · Destroyed
  > the pilot's not obtaining/maintaining proper climb rate.
- [NTSB CHI93LA263](https://openairdocs.org/ntsb/CHI93LA263.md): Grumman G164B · Wyndmere, ND · Accident · No injuries · Limited investigation · Final report · Jul 16, 1993 · N2008 · Substantial damage
  > the pilot's decision to land on unsuitable terrain. Factors in the accident are the wet and soft turf runway.
- [NTSB CHI92DTG04](https://openairdocs.org/ntsb/CHI92DTG04.md): Grumman G-164B · Grandin, ND · Accident · No injuries · Final report · Aug 14, 1992 · N48687 · Substantial damage
  > The cracked cylinder which resulted in a forced landing. The lack of suitable terrain on which to make an emergency landing was a factor.
- [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 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 DEN83LA170](https://openairdocs.org/ntsb/DEN83LA170.md): Grumman G-164B · Page, ND · Accident · No injuries · Limited investigation · Final report · Jun 29, 1983 · N6652Q · Substantial damage
  > While spraying at dusk, the plt was concerned about injuring a 'non-target crop' across the road to the south from the field that was being sprayed. He stated that an irrigation system was sitting pointed southwest, and that as he was entering a swath to the…
- [NTSB DEN82DA157](https://openairdocs.org/ntsb/DEN82DA157.md): Cessna 172 · Grafton, ND · Accident · No injuries · Final report · Aug 7, 1982 · N8909V · 2 aircraft · Substantial damage
  > The pilot stated that when he began to taxi he noticed a Cessna 172 with its engine running in front of a hangar, about 500 feet ahead and to his left. Continuing his taxi, the pilot's attention was diverted by an aircraft on the right. When he looked forward…

## 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" = 'ND' AND c."eventCountry" = 'USA'
  AND c."completionStatus" = 'Completed'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('3952802'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=3952802&state=ND&status=final

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