# NTSB investigations: Lycoming VO-540 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 CEN15LA322](https://openairdocs.org/ntsb/CEN15LA322.md): Bell 47G 4A · Gilbert, IA · Accident · No injuries · Limited investigation · Final report · Jul 24, 2015 · N1396X · Substantial damage
  > The total loss of engine power due to fuel starvation because the available fuel shifted within the tanks due to an abrupt nose-low maneuver to avoid an obstacle, which resulted in a hard forced landing.
- [NTSB CHI94LA022](https://openairdocs.org/ntsb/CHI94LA022.md): Hiller UH12E · Sioux Rapids, IA · Accident · No injuries · Limited investigation · Final report · Oct 22, 1993 · N4026S · Destroyed
  > the Pilot in Command failed to maintain clearance with the terrain while proceeding up an upslope.
- [NTSB CHI92DCD09](https://openairdocs.org/ntsb/CHI92DCD09.md): Hiller Hiller UH-12E · Dows, IA · Accident · No injuries · Final report · Aug 21, 1992 · N527HA · Substantial damage
  > Contaminated fuel resulting in a loss of engine power.
- [NTSB MKC77FCD29](https://openairdocs.org/ntsb/MKC77FCD29.md): Hiller Acft 12E · Reasoner, IA · Accident · No injuries · Closed · Jul 11, 1977 · N3351F · Substantial damage
- [NTSB MKC76DCD54](https://openairdocs.org/ntsb/MKC76DCD54.md): Bell 47J-2A · Keokuk, IA · Accident · No injuries · Closed · Jun 27, 1976 · N8523F · 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 ('41534', '41582'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41534&state=IA

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