# NTSB investigations: Bell 47G-3B-1, 1990

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 NYC90DNA04](https://openairdocs.org/ntsb/NYC90DNA04.md): Bell 47G-3B-1 · Hanson, MA · Accident · No injuries · Final report · Aug 1, 1990 · N34691 · Substantial damage
  > The pilot's loss of control of the helicopter due to the failure of the tail rotor drive shaft.
- [NTSB CHI90DER03](https://openairdocs.org/ntsb/CHI90DER03.md): Bell 47G3B1 · Coon Rapids, MN · Accident · No injuries · Final report · Jul 31, 1990 · N4990H · Substantial damage
  > The pilot-in-command's inaccurate fuel consumption calculations and misjudgement of his fuel supply.
- [NTSB FTW90LA118](https://openairdocs.org/ntsb/FTW90LA118.md): Bell TH13T · Paradise, LA · Accident · No injuries · Limited investigation · Final report · Jun 19, 1990 · N115SD · Substantial damage
  > The failure of the pilot to properly execute the autorotation landing.
- [NTSB NYC90LA122](https://openairdocs.org/ntsb/NYC90LA122.md): Bell 47G-3B1 · Becket, MA · Accident · No injuries · Limited investigation · Final report · May 31, 1990 · N39268 · Substantial damage
  > A power loss due to oil starvation, after maintenance personnel failed to comply with Lycoming directives during the engine overhaul. Factors related to the accident were: improper adjustment of the engine oil pressure by maintenance personnel and unsuitable…
- [NTSB MIA90LA125](https://openairdocs.org/ntsb/MIA90LA125.md): Bell 47G-3B-1 · Lake Wales, FL · Accident · Minor injuries · Limited investigation · Final report · May 21, 1990 · N1390X · Destroyed
  > The pilot's failure to maintain adequate clearance between the main rotor blades and a power line pole while maneuvering during an aerial application flight.

## 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") = 1990
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('1181028', '118103A'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=1181028&year=1990

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