# NTSB investigations: Bell 47G-2, IL

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 CHI95LA003](https://openairdocs.org/ntsb/CHI95LA003.md): Bell 47G2 · Decatur, IL · Accident · Minor injuries · Limited investigation · Final report · Oct 3, 1994 · N5193B · Substantial damage
  > the failure of the roller springs in the freewheeling unit of the transmission which caused the unit to disengage.
- [NTSB CHI94FA202](https://openairdocs.org/ntsb/CHI94FA202.md): Bell 47G2 · Baldwin, IL · Accident · 2 fatal · Field investigation · Final report · Jun 15, 1994 · N4992G · Destroyed
  > The inadequate maintenance (inspection of aircraft) by maintenance personnel, which resulted in a loss of engine power due to fuel exhaustion. Related factors are the unsafetied fuel filter, and low altitude at which the helicopter operated.
- [NTSB CHI87DEV02](https://openairdocs.org/ntsb/CHI87DEV02.md): Bell 47G2 · Peoria Heights, IL · Accident · No injuries · Final report · Jun 22, 1987 · N15395 · Substantial damage
  > Returning from a powerline patrol flight, the engine surged twice and quit. The pilot executed an autorotation to the only available landing site, a high school football field. On touchdown the blades flexed and severed the tailboom. Investigation revealed…
- [NTSB CHI83LA295](https://openairdocs.org/ntsb/CHI83LA295.md): Bell 47G2 · Thomasville, IL · Accident · No injuries · Limited investigation · Final report · Jul 3, 1983 · N5185B · Substantial damage
  > The helicopter tail rotor struck the ground during landing. The helicopter was engaged in aerial application and was returning to reload. The plt reported that at touchdown a gust of wind caused the tail rotor to hit the ground. Decatur winds were reported as…
- [NTSB CHI76FEV34](https://openairdocs.org/ntsb/CHI76FEV34.md): Bell 47G-2 · Lawrenceville, IL · Accident · Serious injuries · Closed · May 4, 1976 · N200J · Substantial damage
- [NTSB CHI76FCA03](https://openairdocs.org/ntsb/CHI76FCA03.md): Bell 47G2 · Sauget, IL · Accident · No injuries · Closed · Oct 18, 1975 · N88755 · Substantial damage
- [NTSB NYC75FEV23](https://openairdocs.org/ntsb/NYC75FEV23.md): Bell 47G-2 · Eddyville, IL · Accident · No injuries · Closed · Mar 17, 1975 · N972B · Substantial damage
- [NTSB CHI73DEV05](https://openairdocs.org/ntsb/CHI73DEV05.md): Bell 47G-2 · Murdock, IL · Accident · No injuries · Closed · Jul 23, 1972 · N12848 · 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" = 'IL' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('1181008'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=1181008&state=IL

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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.