# NTSB investigations: Lycoming VO-540 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 FTW02LA186](https://openairdocs.org/ntsb/FTW02LA186.md): Bell 47G4 · Grand Lake, LA · Accident · Minor injuries · Limited investigation · Final report · Jun 23, 2002 · N62446 · Destroyed
  > the pilot's inability to control the helicopter in a hover due to the restricted movement of the cyclic for undetermined reasons.
- [NTSB FTW98LA030](https://openairdocs.org/ntsb/FTW98LA030.md): Bell 47G-4A · Welsh, LA · Accident · No injuries · Limited investigation · Final report · Oct 16, 1997 · N7104J · Substantial damage
  > the pilot's failure to maintain control of the helicopter, while maneuvering to avoid an obstruction. The abrupt maneuver was a related factor.
- [NTSB FTW96LA285](https://openairdocs.org/ntsb/FTW96LA285.md): Hiller UH12 · Franklin, LA · Accident · No injuries · Limited investigation · Final report · Jul 1, 1996 · N14637 · Substantial damage
  > loss of engine power for undetermined reasons, and the pilot's failure to maintain rotor RPM. A factor was the unsuitable terrain available for the precautionary landing.
- [NTSB FTW91DRD06](https://openairdocs.org/ntsb/FTW91DRD06.md): Bell 47-G2 · White Castle, LA · Accident · No injuries · Final report · Jun 26, 1991 · N8460E · Destroyed
  > The pilot's improper aircraft handling, which resulted in settling with power.
- [NTSB FTW86FRD24](https://openairdocs.org/ntsb/FTW86FRD24.md): Texas Helicopter OH-13E/M74 · Port Allen, LA · Accident · No injuries · Final report · Sep 3, 1986 · N38092 · Substantial damage
  > The helicopter experienced partial power loss and descended to ground. It spray booms became entangled in the soy beans. The helicopter started to nose over, then rolled onto its right side and came to rest. Reason for the partial power loss is undetermined.
- [NTSB FTW79FRD52](https://openairdocs.org/ntsb/FTW79FRD52.md): Bell 47G-4A · Hackberry, LA · Accident · No injuries · Closed · Sep 6, 1979 · N7104J · Substantial damage
- [NTSB FTW79FRD50](https://openairdocs.org/ntsb/FTW79FRD50.md): Bell 47G-4A · Lafayette, LA · Accident · No injuries · Closed · Aug 19, 1979 · N1400W · Substantial damage
- [NTSB FTW78DRA38](https://openairdocs.org/ntsb/FTW78DRA38.md): Hiller UH-12E · Vinton, LA · Accident · No injuries · Closed · Aug 19, 1978 · N529HA · Substantial damage
- [NTSB FTW78FRJ13](https://openairdocs.org/ntsb/FTW78FRJ13.md): Bell 47-G2A · Dupont, LA · Accident · No injuries · Closed · Apr 20, 1978 · N8484E · Destroyed
- [NTSB FTW73FRD04](https://openairdocs.org/ntsb/FTW73FRD04.md): Bell 47J-2A · Venice, LA · Accident · No injuries · Closed · Aug 29, 1972 · N3092G · Substantial damage
- [NTSB FTW71FRJ23](https://openairdocs.org/ntsb/FTW71FRJ23.md): Bell 47G-4 · Vivian, LA · Accident · Serious injuries · Closed · Nov 16, 1970 · N1216W · Substantial damage
- [NTSB FTW70FRD01](https://openairdocs.org/ntsb/FTW70FRD01.md): Bell 47G-4A · Morgan City, LA · Accident · Minor injuries · Closed · Feb 17, 1970 · N6230N · Substantial damage
- [NTSB FTW67A0037](https://openairdocs.org/ntsb/FTW67A0037.md): Bell 47J-2A · Leeville, LA · Accident · No injuries · Closed · Sep 22, 1966 · N3092G · Substantial damage
- [NTSB FTW66A0046](https://openairdocs.org/ntsb/FTW66A0046.md): Bell 47-J2A · Empire, LA · Accident · No injuries · Closed · Nov 15, 1965 · N3092G · 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 ('41534', '41582'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

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