# NTSB investigations: Lycoming VO-435 series, IA

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 CEN11CA540](https://openairdocs.org/ntsb/CEN11CA540.md): Bell 47G-2 · Charles City, IA · Accident · Serious injuries · Data collection · Final report · Aug 2, 2011 · N4771N · Substantial damage
  > The pilot's failure to refuel the helicopter which resulted in a loss of engine power due to fuel exhaustion.
- [NTSB CHI07CA212](https://openairdocs.org/ntsb/CHI07CA212.md): Bell 47G-5 · Jesup, IA · Accident · No injuries · Data collection · Final report · Jul 10, 2007 · N8140J · Substantial damage
  > The pilot's inability to maintain control of the helicopter when it unexpectedly encountered a whirlwind shortly after takeoff.
- [NTSB CHI90LA205](https://openairdocs.org/ntsb/CHI90LA205.md): Bell 47G-5 · Hudson, IA · Accident · No injuries · Limited investigation · Final report · Jul 30, 1990 · N8140J · Substantial damage
  > Improper touchdown performed by the pilot in command.
- [NTSB MKC82DA151](https://openairdocs.org/ntsb/MKC82DA151.md): Bell 47G-2A · Washington, IA · Accident · No injuries · Final report · Aug 22, 1982 · N73205 · Substantial damage
  > The helicopter was being air taxied to the refueling location when it crashed. The pilot said he had lifted off and was about 6 ft AGL with about 20 KTS forward speed when he suddenly felt a snap and the cyclic went full left. The helicopter became…
- [NTSB MKC82DA082](https://openairdocs.org/ntsb/MKC82DA082.md): Bell 47G2 · Thornton, IA · Accident · Minor injuries · Final report · May 14, 1982 · N8426E · Substantial damage
  > During the downwind turn for the fourth spraying pass the pilot encountered a gust of wind. The pilot stated he applied power, collective and cyclic to level off at spraying altitude but the wind was too strong to prevent the tailboom from striking the ground.
- [NTSB MKC78DCD49](https://openairdocs.org/ntsb/MKC78DCD49.md): Bell 47G-5A · Manson, IA · Accident · No injuries · Closed · Aug 29, 1978 · N14841 · Substantial damage
- [NTSB MKC78DCD34](https://openairdocs.org/ntsb/MKC78DCD34.md): Bell 47J-2 · Burlington, IA · Accident · No injuries · Closed · Jun 18, 1978 · N23MA · Destroyed
- [NTSB MKC71DCD13](https://openairdocs.org/ntsb/MKC71DCD13.md): Bell 47G-5 · Conrad, IA · Accident · No injuries · Closed · Jul 21, 1970 · N8140J · Substantial damage
- [NTSB MKC70D0204](https://openairdocs.org/ntsb/MKC70D0204.md): Bell 47G-5 · Irwin, IA · Accident · No injuries · Closed · Aug 26, 1969 · N7801S · Substantial damage

## 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" = 'IA' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41525'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41525&state=IA

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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.