# NTSB investigations: Lycoming VO-435 series, LA

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 CEN14LA415](https://openairdocs.org/ntsb/CEN14LA415.md): Bell 47G 2 · Jeanerette, LA · Accident · 1 fatal · Limited investigation · Final report · Aug 10, 2014 · N4690 · Destroyed
  > The pilot’s improper decision to operate an unairworthy helicopter, which resulted in a loss of control and subsequent impact with terrain.
- [NTSB CEN11CA231](https://openairdocs.org/ntsb/CEN11CA231.md): Hiller UH-12D · Iowa, LA · Accident · No injuries · Data collection · Final report · Mar 17, 2011 · N11CU · Substantial damage
  > The pilot's inadequate compensation for gusty crosswinds during takeoff, which resulted in a loss of directional control.
- [NTSB FTW02LA216](https://openairdocs.org/ntsb/FTW02LA216.md): Bell TH-13T · New Iberia, LA · Accident · No injuries · Limited investigation · Final report · Jul 18, 2002 · N99628 · Substantial damage
  > The loss of engine power for undetermined reasons. High vegetation was a factor.
- [NTSB DEN93LA091](https://openairdocs.org/ntsb/DEN93LA091.md): Continental Copters Tomcat MK5A · Duson, LA · Accident · No injuries · Limited investigation · Final report · Jul 30, 1993 · N9014T · Substantial damage
  > Failure of the transmission mast bearing, resulting in oil contamination and subsequent blockage of the internal oil ports and passages. Factors were: total loss of collective control and partial loss of cyclic control.
- [NTSB FTW91LA125](https://openairdocs.org/ntsb/FTW91LA125.md): Bell 47G-2 · Slidell, LA · Accident · No injuries · Limited investigation · Final report · Jul 22, 1991 · N312SH · Substantial damage
  > The pilot performing a touchdown autorotation to unsuitable terrain. Factors were the soft terrain and the inadequate supervision by the FAA inspector.
- [NTSB FTW76FRD52](https://openairdocs.org/ntsb/FTW76FRD52.md): Bell 47G-5 · Walker, LA · Accident · No injuries · Closed · Jun 10, 1976 · N4713R · Substantial damage
- [NTSB FTW70FRD04](https://openairdocs.org/ntsb/FTW70FRD04.md): Bell 47J · Patterson, LA · Accident · No injuries · Closed · Feb 25, 1970 · N7819B · Destroyed
- [NTSB FTW70A0014](https://openairdocs.org/ntsb/FTW70A0014.md): Bell 47G-2 · Buras, LA · Accident · No injuries · Closed · Sep 8, 1969 · N955 · Substantial damage
- [NTSB FTW67A0073](https://openairdocs.org/ntsb/FTW67A0073.md): Bell 47J · Grande Isle, LA · Accident · No injuries · Closed · Jan 10, 1967 · N2861B · 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" = 'LA' 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=LA

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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.