# NTSB investigations: Lycoming IGSO-540-B1A: 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 DEN87FA066](https://openairdocs.org/ntsb/DEN87FA066.md): Rockwell 680FL · Basalt, CO · Accident · Serious injuries · Field investigation · Final report · Mar 13, 1987 · N4581E · Destroyed
  > N4581E was operating under 14 CFR 135 carrying cargo. The plt stated that he departed VFR and had '7 to 10' mi vis at the acdt site. Witnesses at and near the acdt site stated that heavy snow was falling at the time of the acdt and the vis was 1 mi or less.…
- [NTSB DCA85AA012](https://openairdocs.org/ntsb/DCA85AA012.md): Beech 65-A80 · Soldotna, AK · Accident · 9 fatal · Final report · Feb 4, 1985 · N50NP · Destroyed
  > During arrival, the crew of npa flt 1802 contacted the company wx observer at Soldotna who advised the wx was: wnd calm,ceiling 600 to 800 ft, vis 8 to 10 mi, no precip. They made an NDB apch, but missed the apch & requested another apch. Aprx 1 min later,…

## 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 ('41535')
    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=41535&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.