# NTSB investigations: Alon A2, 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 CEN25LA264](https://openairdocs.org/ntsb/CEN25LA264.md): Alon A2 · Pipestone, MN · Accident · No injuries · Class 4 · Limited · Final report · Jul 20, 2025 · N6557Q · Substantial damage
  > The failure of the left brake to release due to corrosion and pitting of the caliper piston and bore, which resulted in a runway excursion.
- [NTSB CHI04LA082](https://openairdocs.org/ntsb/CHI04LA082.md): Alon A2 Ercoupe · Hawley, MN · Accident · No injuries · Limited investigation · Final report · Feb 28, 2004 · N825DC · Substantial damage
  > The loss of engine power for undetermined reasons. A contributing factor was the fence post.
- [NTSB MKC68D0076](https://openairdocs.org/ntsb/MKC68D0076.md): Alon A-2 · Finlayson, MN · Accident · No injuries · Closed · Jul 4, 1967 · N6525Q · Substantial damage
- [NTSB MKC67D0186](https://openairdocs.org/ntsb/MKC67D0186.md): Alon A-2 · Silver Bay, MN · Accident · No injuries · Closed · Aug 26, 1966 · N6552Q · 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 ('0540102'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=0540102&state=MN

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