# NTSB investigations: Canadian Car & Foundry HARVARD MK IV, IA

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 CHI98LA250](https://openairdocs.org/ntsb/CHI98LA250.md): Canadian Car & Foundry Harvard MK IV · Dyersville, IA · Accident · Minor injuries · Limited investigation · Final report · Jul 14, 1998 · N5101W · Substantial damage
  > the pilot in command's not maintaining control of the airplane and his inadvertently allowing the airplane to enter a stall. A factor was the undetermined loss of engine power.
- [NTSB CHI91DCD02](https://openairdocs.org/ntsb/CHI91DCD02.md): Canadian Car & Foundry Harvard Mark IV · Ida Grove, IA · Accident · 1 fatal · Final report · Aug 11, 1991 · N15795 · Destroyed
  > The pilot's failure to maintain airspeed.

## 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" = 'IA' 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 ('1922828'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=1922828&state=IA

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