# NTSB investigations: Continental IO-520-F: In flight collision with terrain/water

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 ANC99LA008](https://openairdocs.org/ntsb/ANC99LA008.md): Cessna 207A · Noorvik, AK · Accident · Minor injuries · Limited investigation · Final report · Oct 26, 1998 · N9400M · Substantial damage
  > The pilot's continued VFR flight into instrument meteorological conditions. Factors in the accident were a dark night and low ceilings.
- [NTSB ANC97FA155](https://openairdocs.org/ntsb/ANC97FA155.md): Cessna 207A · Twin Hills, AK · Accident · 1 fatal · Field investigation · Final report · Sep 26, 1997 · N9984M · Destroyed
  > Improper in-flight planning/decision by the pilot, and his failure to maintain sufficient altitude over mountainous terrain. Factors related to the accident were downdraft conditions, mountainous/hilly terrain, and the use of over-the-counter medications.
- [NTSB ANC92LA122](https://openairdocs.org/ntsb/ANC92LA122.md): Cessna 207A · St. Michael, AK · Accident · Minor injuries · Limited investigation · Final report · Aug 8, 1992 · N9970M · Substantial damage
  > The pilot attempted VFR flight into IMC weather conditions. Contributing to the accident were the mountainous/hilly terrain, and the low ceiling weather condition.
- [NTSB ANC92LA119](https://openairdocs.org/ntsb/ANC92LA119.md): Cessna 207 · Funter Pass, AK · Accident · Serious injuries · Limited investigation · Final report · Aug 6, 1992 · N94AK · Substantial damage
  > The pilots inadequate visual lookout, and his inadvertent VFR flight into IMC conditions. Contributing to the accident were the clouds.
- [NTSB ANC91LA027](https://openairdocs.org/ntsb/ANC91LA027.md): Cessna 207 · Kivalina, AK · Accident · Minor injuries · Limited investigation · Final report · Feb 10, 1991 · N9651M · Substantial damage
  > The pilot's failure in not identifying the weather conditions along the route. Contributing to the accident was improper in flight planning and decision by the PIC and the whiteout conditions.
- [NTSB ANC90FA101](https://openairdocs.org/ntsb/ANC90FA101.md): Cessna 207A · Aialak Bay, AK · Accident · 5 fatal · Field investigation · Final report · Jun 25, 1990 · N9985M · Destroyed
  > The pilot-in-command's attempt to fly under visual flight rules while in instrument meteorological conditions. Contributing factors to the accident were the low ceiling and surrounding mountainous terrain.

## 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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('17237')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 230))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=17237&occurrence=230

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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.