# NTSB investigations: Bell 47G-5A: Airframe/component/system failure/malfunction

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 CHI07LA277](https://openairdocs.org/ntsb/CHI07LA277.md): Bell 47G-5A · Anoka, MN · Accident · Minor injuries · Limited investigation · Final report · Aug 24, 2007 · N25LB · Substantial damage
  > The loss of helicopter pitch control for undetermined reasons during the aerial application maneuver and the pilot's inability to control the aircraft during the descent.. A contributing factor to the accident was the soft terrain.
- [NTSB LAX88DUG07](https://openairdocs.org/ntsb/LAX88DUG07.md): Bell 47G-5A · Perris, CA · Accident · No injuries · Final report · Sep 18, 1988 · N4099G · Substantial damage
  > On liftoff, tail rotor control was lost and helicopter spun with main rotor striking terrain. Investigation revealed fatigue failure of engine mounting cage. The eng basket had failed and allowed the t/r drive shaft to pull out of the coupling. The basket had…
- [NTSB CHI82DA198](https://openairdocs.org/ntsb/CHI82DA198.md): Bell 47G-5A · New Philadelphi, OH · Accident · Minor injuries · Final report · Jun 1, 1982 · N2988W · Destroyed
  > While patrolling a powerline, the pilot heard a loud noise, similar to a gunshot, which seemed to come from directly behind the firewall. Immediately after that, the helicopter started to pitch up and roll to the right. He reported that the helicopter reached…

## 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.aircraft_model_code IN ('1181034')
    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" = 130))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=1181034&occurrence=130

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