# NTSB investigations: Bell 47G-5: 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 MIA04GA117](https://openairdocs.org/ntsb/MIA04GA117.md): Bell 47G-5 · Bunnell, FL · Accident · 1 fatal · Final report · Aug 4, 2004 · N232MC · Substantial damage
  > The pilot's continued flights and inadequate inspections after repeated tail rotor guard ground strikes due to improper flaring, which resulted in an in-flight failure of tail rotor drive shaft components, a loss of control, and the helicopter crash.
- [NTSB LAX95LA216](https://openairdocs.org/ntsb/LAX95LA216.md): Bell 47-G5 · Coalinga, CA · Accident · No injuries · Limited investigation · Final report · Jun 18, 1995 · N7923J · Destroyed
  > clutch slippage for undetermined reasons. A factor in the accident was the helicopter's low above ground altitude, which limited the pilot's time and ability to recover main rotor rpm.
- [NTSB FTW95LA239](https://openairdocs.org/ntsb/FTW95LA239.md): Bell 47G-5 · Falfurrias, TX · Accident · No injuries · Limited investigation · Final report · May 30, 1995 · N1502L · Substantial damage
  > Inadvertent installation of an unapproved part (tail rotor gear/drive assembly), that became excessively worn since it did not conform to the manufacturer's specification, resulting in failure of the associated tail rotor bearing (also an unapproved part),…
- [NTSB MIA92LA014](https://openairdocs.org/ntsb/MIA92LA014.md): Bell 47G-5 · La Belle, FL · Accident · No injuries · Limited investigation · Final report · Oct 13, 1991 · N1201W · Substantial damage
  > The pilot in command's improper aft application of cyclic control during an autorotative landing to an open field, resulting in the main rotor blades colliding with the tail boom. Contributing to the accident was the in flight failure of the outer bearing of…
- [NTSB LAX86FVA11](https://openairdocs.org/ntsb/LAX86FVA11.md): Bell 47G-5 · Porterville, CA · Accident · Serious injuries · Final report · Jul 8, 1986 · N1316X · Substantial damage
  > During an aerial application flight the plt lost control of the helicopter and collided with a building. Examination revealed that the inside diameter of the tail rotor driveshaft was not coated with aluminized lacquer as required by the Bell finish process…
- [NTSB CHI86FER11](https://openairdocs.org/ntsb/CHI86FER11.md): Bell 47G-5 · Brooten, MN · Accident · Serious injuries · Final report · Jun 17, 1986 · N8122J · Destroyed
  > According to the pilot, the helicopter collective control failed to respond to a climb input to level off after a descent for an agricultural swath run. Fire and impact damage to the helicopter was extensive, however one broken rod end in the collective…

## 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 ('1181032')
    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=1181032&occurrence=130

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