# NTSB investigations: American AA-1A, WI

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 CEN26LA208](https://openairdocs.org/ntsb/CEN26LA208.md): American AA-1A · Amery, WI · Accident · Minor injuries · Class 3 · Limited · Preliminary report · May 30, 2026 · N6416L · Substantial damage
  > On May 30, 2026, about 1113 central daylight time, a Grumman AA-1A airplane, N6416L, was substantially damaged when it was involved in an accident near Amery, Wisconsin. The pilot sustained minor injuries. The airplane was operated as a Title 14 Code of…
- [NTSB CHI08CA226](https://openairdocs.org/ntsb/CHI08CA226.md): American AA-1A · Grantsburg, WI · Accident · Minor injuries · Data collection · Final report · Jul 22, 2008 · N9483L · Substantial damage
  > A loss of engine power for an undetermined reason.
- [NTSB CHI08CA076](https://openairdocs.org/ntsb/CHI08CA076.md): American AA-1A · Grantsburg, WI · Accident · No injuries · Data collection · Final report · Feb 6, 2008 · N9483L · Substantial damage
  > The seizure of the left brake due to a buildup of ice between the rotor and brake pad. Contributing to the accident was the snow and slush covered runway, and the snowbank.
- [NTSB CHI79FEP06](https://openairdocs.org/ntsb/CHI79FEP06.md): Grumman AA1-A · Milwaukee, WI · Accident · Serious injuries · Closed · Nov 7, 1978 · N9424L · Substantial damage
- [NTSB CHI76DEP10](https://openairdocs.org/ntsb/CHI76DEP10.md): Grum Amer AA1-A · Portage, WI · Accident · Minor injuries · Closed · Jul 20, 1975 · N9251L · Substantial damage
- [NTSB CHI75AC017](https://openairdocs.org/ntsb/CHI75AC017.md): Amer Avco AA-1A · New Richmond, WI · Accident · 1 fatal · Closed · Aug 18, 1974 · N9262L · Destroyed
- [NTSB CHI74DEP45](https://openairdocs.org/ntsb/CHI74DEP45.md): Amer Avco AA1-A · Brodhead, WI · Accident · No injuries · Closed · Apr 27, 1974 · N9394L · 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" = 'WI' 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 ('0630710'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=0630710&state=WI

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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.