# Fatal NTSB investigations: Continental IO-520 series, 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 CHI05FA048](https://openairdocs.org/ntsb/CHI05FA048.md): Beech S35 · Herman, WI · Accident · 2 fatal · Field investigation · Final report · Dec 25, 2004 · N5631K · Substantial damage
  > The installation of the improper cylinder base packing seals by maintenance personnel resulting in the loss of lubriation and subsequent failure of the number four connecting rod/bearing. A factor associated with the accident was the trees that the airplane…
- [NTSB CHI01FA218](https://openairdocs.org/ntsb/CHI01FA218.md): Cessna 310R · Oak Creek, WI · Accident · 1 fatal · Field investigation · Final report · Jul 18, 2001 · N1448Z · Destroyed
  > The pilot not maintaining clearance from objects during an ILS approach in low night IFR conditions and his descent below decision height. Factors were the dark night, mist, low ceiling, and the trees west of the approach.
- [NTSB CHI98FA349](https://openairdocs.org/ntsb/CHI98FA349.md): Beech 58 · Oakdale, WI · Accident · 3 fatal · Field investigation · Final report · Sep 16, 1998 · N4574Q · Destroyed
  > The installation of the door seal inflation system by company personnel. An additional cause was the emergency procedures not followed by the pilot-in-command. A contributing factor was the trees.
- [NTSB CHI98FA344](https://openairdocs.org/ntsb/CHI98FA344.md): Cessna A185F · Phillips, WI · Accident · 2 fatal · Field investigation · Final report · Aug 4, 1998 · N888KS · Destroyed
  > The pilot's failure to maintain adequate altitude/clearance with trees. Contributing factors were fog, rain showers, and the trees.
- [NTSB CHI93FA200](https://openairdocs.org/ntsb/CHI93FA200.md): Beech A-36 · Tony, WI · Accident · 2 fatal · Field investigation · Final report · Jun 9, 1993 · N236A · Destroyed
  > the pilot's decision to continue flight into known adverse weather and exceeded the design strees limits of the airplane. Factors associated with the accident were inadequate preflight planning/preparation, clouds, turbulence, icing conditions, and the lack…
- [NTSB CHI92FA110](https://openairdocs.org/ntsb/CHI92FA110.md): Cessna 310R · Superior, WI · Accident · 2 fatal · Field investigation · Final report · Mar 11, 1992 · N1328G · Destroyed
  > Inadequate airspeed, which resulted in an inadvertent stall/spin, and failure of the instructor pilot to take sufficient remedial action to prevent the loss of control.
- [NTSB CHI78FA049](https://openairdocs.org/ntsb/CHI78FA049.md): Bellanca 17-30A · Rhinelander, WI · Accident · 1 fatal · Closed · Jul 12, 1978 · N93627 · Destroyed

## 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."highestInjuryLevel" = 'Fatal'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('17032'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=17032&fatal=1&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.