# NTSB investigations: Lycoming VO-435 series, 2011

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 CEN11CA524](https://openairdocs.org/ntsb/CEN11CA524.md): Texas Helicopter OH-13H/M74A · Creston, IL · Accident · Minor injuries · Data collection · Final report · Jul 28, 2011 · N10009 · Substantial damage
  > The pilot's failure to maintain adequate skid clearance from the helicopter cart during landing, resulting in a dynamic rollover.
- [NTSB CEN11CA525](https://openairdocs.org/ntsb/CEN11CA525.md): Bell 47G-2A · Nicolett, MN · Accident · No injuries · Data collection · Final report · Jul 27, 2011 · N7578 · Substantial damage
  > The pilot's failure to maintain control of the helicopter while maneuvering during an aerial application flight.
- [NTSB WPR11CA339](https://openairdocs.org/ntsb/WPR11CA339.md): Bell 47G-5 · Watsonville, CA · Accident · No injuries · Data collection · Final report · Jul 20, 2011 · N1375X · Substantial damage
  > The pilot's failure to maintain clearance from a pole while maneuvering during an aerial application flight.
- [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.

## 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 year(c."eventDate") = 2011
  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&year=2011

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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.