# NTSB investigations: Continental IO-520-F: In flight encounter with weather

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 ANC01LA099](https://openairdocs.org/ntsb/ANC01LA099.md): Cessna 207 · Healy, AK · Accident · No injuries · Limited investigation · Final report · Aug 3, 2001 · N9794M · Substantial damage
  > The pilot's continued flight into adverse weather conditions after becoming lost/disoriented. Factors in the accident were rising terrain, a blind/box canyon, low clouds, and rain.
- [NTSB ANC99FA047](https://openairdocs.org/ntsb/ANC99FA047.md): Cessna 207A · Kotzebue, AK · Accident · 1 fatal · Field investigation · Final report · Apr 14, 1999 · N73188 · Destroyed
  > The pilot's continued VFR flight into instrument meteorological conditions, spatial disorientation, and an inadvertent stall. Factors in the accident were weather conditions consisting of snow and mist, and flat lighting conditions.
- [NTSB ANC98FA152](https://openairdocs.org/ntsb/ANC98FA152.md): Cessna 207 · Kotzebue, AK · Accident · 1 fatal · Field investigation · Final report · Sep 17, 1998 · N1809Q · Destroyed
  > The pilot's continued VFR flight into instrument meteorological conditions. Factors associated with the accident were low ceilings, mountainous/hilly terrain features, rain, and fog.
- [NTSB ANC97LA022](https://openairdocs.org/ntsb/ANC97LA022.md): Cessna 207A · Tununak, AK · Accident · Serious injuries · Limited investigation · Final report · Jan 17, 1997 · N9603M · Substantial damage
  > the pilot's decision to continue VFR flight into instrument meteorological conditions (IMC), and his failure to maintain clearance from rising terrain. Factors associated with the accident were: low ceiling, fog, rising terrain, and the pilot's inadequate…
- [NTSB ANC91LA038](https://openairdocs.org/ntsb/ANC91LA038.md): Cessna 207 · Saint Marys, AK · Accident · Minor injuries · Limited investigation · Final report · Mar 27, 1991 · N9968M · Substantial damage
  > The pilot-in-command's failure to maintain VFR flight in instrument meteorological conditions while maneuvering on a VFR flight plan. Factors related to the accident was the pic's failure to evaluate the weather conditions that existed.
- [NTSB ANC88FA020](https://openairdocs.org/ntsb/ANC88FA020.md): Cessna 207A · Ambler, AK · Accident · 1 fatal · Field investigation · Final report · Dec 11, 1987 · N9979M · Substantial damage
  > The plt of the air taxi cargo flt was operg at night in marginal VFR conds when the acft struck rising terrain. The acft was fnd the next day at aprx 1000 ast, some 15 mi off the intended route. The plt was unconscious & suffering fm hypothermia & other…
- [NTSB ANC87FA023](https://openairdocs.org/ntsb/ANC87FA023.md): Cessna 207A · Kenai, AK · Accident · 1 fatal · Field investigation · Final report · Jan 14, 1987 · N9395M · Destroyed
  > Wx conds on the day of the acdnt were rprtd to be extremely variable. Initially, when the plt obtained a wx briefing, VFR flt was not rcmdd. Later, the wx improved & the plt elected to proceed on the flt. While en route, he enctrd snow showers & dscndd to…
- [NTSB ANC85FA085](https://openairdocs.org/ntsb/ANC85FA085.md): Cessna C-207A · Golovin, AK · Accident · 2 fatal · Field investigation · Final report · May 16, 1985 · N73635 · Substantial damage
  > According to the pilot-in-command, he was attempting to fly through a mountain saddle. As he turned towards the mountain and began his climb the weather deteriorated rapidly with ceilings zero, visibility zero and severe turbulence. The airplane struck the…

## 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" = 240))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=17237&occurrence=240

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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.