# NTSB investigations: Zengel Frank H RV 4, IL

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 CHI90DCA01](https://openairdocs.org/ntsb/CHI90DCA01.md): Zengel RV-4 · Columbia, IL · Accident · Serious injuries · Final report · May 5, 1990 · N371FZ · Substantial damage
  > The pilot's failure to maintain a proper glidepath to touchdown on the runway.
- [NTSB CHI89DCA01](https://openairdocs.org/ntsb/CHI89DCA01.md): Zengel RV-4 · Columbia, IL · Accident · Minor injuries · Final report · May 21, 1989 · N371FZ · Substantial damage
  > The improper routing of engine fuel lines resulting in over temperature of the lines which resulted in the fuel flow to carburetor to fluctuate and cause over rich condition and loss of engine power.

## 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" = 'IL' 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 ('05608AJ'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=05608AJ&state=IL

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