# NTSB investigations: Bell 47G-2: Loss of engine power(total) - mech failure/malf

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 MIA87IA185](https://openairdocs.org/ntsb/MIA87IA185.md): Bell 47G-2 · Miami, FL · Incident · No injuries · Incident investigation · Final report · Jun 17, 1987 · N17271 · Minor damage
  > While in cruise flt at aprx 300 ft the plt reported that he heard a loud noise followed by a loss of power. He then autorotated & set the helicopter down with no further incident. Insp of the eng revealed that the number 6 cylinder connecting rod failed near…
- [NTSB SEA86LA168](https://openairdocs.org/ntsb/SEA86LA168.md): Bell 47G2A · Chehalis, WA · Accident · No injuries · Limited investigation · Final report · Jul 13, 1986 · N12848 · Substantial damage
  > During an aerial applications maneuver, a complete loss of power occurred. The power loss was caused by failure of the connecting rod bolt. The acft was too low for autorotation and the aircraft struck the ground tail low. The main rotor blade then struck the…
- [NTSB SEA86LA143](https://openairdocs.org/ntsb/SEA86LA143.md): Bell 47G-2 · Zillah, WA · Accident · No injuries · Limited investigation · Final report · Jun 12, 1986 · N11VH · Destroyed
  > En route to the local spray area a total loss of power occurred along with a loss of oil pressure. The acft was aprx 200 ft AGL over a pear orchard. The plt was attempting to autorotate onto a nearby road but the left skid caught the roof top of a metal shed.…
- [NTSB FTW83FA311](https://openairdocs.org/ntsb/FTW83FA311.md): Bell 47G-2 · Bethany, OK · Accident · Minor injuries · Field investigation · Final report · Jul 3, 1983 · N2495B · Destroyed
  > The helicopter collided with trees and rolled over during a forced landing after engine failure. The plt had been takingpassengers up for sight-seeing for several hours. After the last flt he and his wife had departed the city park to fly back to the acft…
- [NTSB LAX83LVM01](https://openairdocs.org/ntsb/LAX83LVM01.md): Bell 47G2 · 5nm East Of Sal, CA · Accident · No injuries · Final report · Oct 10, 1982 · N5159B · Substantial damage
  > After takeoff, during an aerial application flight, the pilot felt a sudden jolt and the engine RPM revved then decayed very rapidly. The pilot made a hard landing and the main rotor severed the tail rotor. The aircraft was within the weight and balance…
- [NTSB SEA82DA072](https://openairdocs.org/ntsb/SEA82DA072.md): Bell 47G-2 · Grandview, WA · Accident · No injuries · Final report · May 18, 1982 · N11VH · Substantial damage
  > While dispensing herbicide (systox) over an apple orchard the pilot sensed that the engine was binding followed by a power loss. The pilot elected to dump the herbicide and performed a power-off autorotation landing in a grape vineyard. Investigation revealed…

## 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 ('1181008')
    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" = 351))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=1181008&occurrence=351

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