# NTSB investigations: Franklin 6V4 series: In flight collision with object

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 NYC00LA044](https://openairdocs.org/ntsb/NYC00LA044.md): Bell 47G · Coudersport, PA · Accident · No injuries · Limited investigation · Final report · Nov 27, 1999 · N940B · Substantial damage
  > The pilot's improper preflight planning and decision to attempt a takeoff with the passenger from the confined area.
- [NTSB MIA97FA248](https://openairdocs.org/ntsb/MIA97FA248.md): Bell 47G · Saluda, SC · Accident · 2 fatal · Field investigation · Final report · Sep 19, 1997 · N70747 · Destroyed
  > in-flight collision with a tree, for undetermined reason(s).
- [NTSB ATL97LA121](https://openairdocs.org/ntsb/ATL97LA121.md): Bell 47-D1 · Holcomb, MS · Accident · No injuries · Limited investigation · Final report · Aug 11, 1997 · N908B · Substantial damage
  > The failure of the pilot to adequately see and avoid all obstructions while doing aerial application work.
- [NTSB SEA91LA233](https://openairdocs.org/ntsb/SEA91LA233.md): Bell 47G · Miltonfreewater, OR · Accident · Minor injuries · Limited investigation · Final report · Sep 12, 1991 · N73865 · Substantial damage
  > Pilot factor in that the pilot failed to insure there was adequate clearance from obstacles for a safe takeoff. A factor to the accident was: the pilot's poor preflight planning/preparation.
- [NTSB CHI90DEC04](https://openairdocs.org/ntsb/CHI90DEC04.md): Bell 47 D-1 · Stockbridge, MI · Accident · Serious injuries · Final report · Aug 14, 1990 · N3656F · Destroyed
  > The restricted visual lookout which resulted from the canopy fogging up.
- [NTSB NYC90DGM02](https://openairdocs.org/ntsb/NYC90DGM02.md): Bell 47D1 · Meadville, PA · Accident · 1 fatal · Final report · Jun 22, 1990 · N310A · Destroyed
  > The pilot's failure to see and avoid the power lines.
- [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 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.
- [NTSB FTW85LA074](https://openairdocs.org/ntsb/FTW85LA074.md): Bell 47D1 · Ardmore, OK · Accident · Serious injuries · Limited investigation · Final report · Dec 7, 1984 · N5226 · Substantial damage
  > The acft collided with power lines during a recovery from a practice autorotational landing. The instructor plt took control of the acft for recovery and did not see the wires.

## 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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('27033')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 220))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=27033&occurrence=220

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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.