# NTSB investigations: Grumman Acft ENG Cor-Schweizer G-164A, MN

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 CHI01LA229](https://openairdocs.org/ntsb/CHI01LA229.md): Grumman-Schweizer G-164A · Dodge Center, MN · Accident · No injuries · Limited investigation · Final report · Jul 22, 2001 · N5398 · Destroyed
  > The pilot not maintaining directional control on the ground during the takeoff roll. Factors relating to this accident were the total failure of the propeller governor and the corn crop.
- [NTSB CHI98LA230](https://openairdocs.org/ntsb/CHI98LA230.md): Grumman G-164A · Red Lake Falls, MN · Accident · No injuries · Limited investigation · Final report · May 21, 1998 · N9632 · Substantial damage
  > a locked brake for undetermined reasons.
- [NTSB CHI85FER02](https://openairdocs.org/ntsb/CHI85FER02.md): Grumman 164A · Becker, MN · Accident · No injuries · Final report · Sep 18, 1985 · N48405 · Substantial damage
  > The plt reported the eng pwr dropped from 2000 to 1550 RPM during the aerial application flt. The plt increased throttleand advanced the prop with no increase in pwr. The acft then settled to ground impact and nosed over. Post accident inspection disclosed…
- [NTSB CHI83LA288](https://openairdocs.org/ntsb/CHI83LA288.md): Grumman G-164A · Morris, MN · Accident · No injuries · Limited investigation · Final report · Jul 1, 1983 · N8379 · Substantial damage
  > The plt reported that while he was waiting for the flagman, circling the field to be sprayed, & talking to the flagman, the acft began to sink & struck trees. The load was dumped, but the plane continued to sink to the ground. During the landing, the acft…
- [NTSB MKC80DER65](https://openairdocs.org/ntsb/MKC80DER65.md): Grumman G-164A · Red Lake Falls, MN · Accident · No injuries · Closed · Aug 2, 1979 · N8768H · 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."eventStateOrRegion" = 'MN' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('3952801'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=3952801&state=MN

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