# NTSB investigations: Franklin 6V4 series, 1989

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 MIA90LA023](https://openairdocs.org/ntsb/MIA90LA023.md): Bell 47D1 · Loxahatchee, FL · Accident · Serious injuries · Limited investigation · Final report · Nov 2, 1989 · N93067 · Substantial damage
  > Failure of the pilot to maintain rotor RPM after pulling up from a swath run. A related factor was the presence of trees.
- [NTSB MKC89LA195](https://openairdocs.org/ntsb/MKC89LA195.md): Bell 47G · Ozark, MO · Accident · No injuries · Limited investigation · Final report · Sep 2, 1989 · N182JR · Substantial damage
  > The failure of the dual student to properly flare during an autorotative landing resulting in a hard landing and partial failure of the right skid. The CFI also failed to properly monitor the student's actions on the flight controls.
- [NTSB SEA89LA120](https://openairdocs.org/ntsb/SEA89LA120.md): Bell 47G-2 · Centralia, WA · Accident · Minor injuries · Limited investigation · Final report · Jun 24, 1989 · N1161N · Destroyed
  > The pilot misjudged his clearance over trees, which resulted in an in-flight tail rotor strike with the trees and loss of tail rotor control. The trees were a related factor.
- [NTSB ATL89DLT03](https://openairdocs.org/ntsb/ATL89DLT03.md): Bell 47 · Shelbyville, TN · Accident · No injuries · Final report · May 12, 1989 · N908B · Substantial damage
  > Failure in the rotor drive system for unknown reasons. Contributing to the accident was the pilot's inability to perform an autorotation.
- [NTSB MIA89LA133](https://openairdocs.org/ntsb/MIA89LA133.md): Bell 47D1 · Miami, FL · Accident · Serious injuries · Limited investigation · Final report · Apr 17, 1989 · N342L · Substantial damage
  > The unqualified persons failure to maintain clearance from the fence. Pressure induced by others, lack of experience, and over confidence in personal ability are contributing factors to this accident.

## 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") = 1989
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('27033'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=27033&year=1989

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