# NTSB investigations: Bell 47G-3B-1: Collision with terr/obj (non-CFIT)

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 WPR19LA194](https://openairdocs.org/ntsb/WPR19LA194.md): Bell 47G 3B 1 · Mosby, MT · Accident · Serious injuries · Class 3 · Limited · Final report · Jul 13, 2019 · N3078G · Substantial damage
  > The pilot’s failure to account for environmental conditions conducive to a loss of tail rotor effectiveness, which resulted in a loss of tail rotor effectiveness and subsequent loss of control. Contributing to the accident was the pilot’s inappropriate…
- [NTSB WPR19LA019](https://openairdocs.org/ntsb/WPR19LA019.md): Bell 47G · Wichita Falls, TX · Accident · Serious injuries · Class 3 · Limited · Final report · Nov 2, 2018 · N1159W · Destroyed
  > A total loss of engine power for reasons that could not be determined based on the available information.
- [NTSB CEN16LA182](https://openairdocs.org/ntsb/CEN16LA182.md): Bell 47G 3B 1 · Portia, AR · Accident · 1 fatal · Limited investigation · Final report · May 13, 2016 · N48316 · Substantial damage
  > The pilot's decision to perform a sliding takeoff from the elevated platform, which resulted in a dynamic rollover when the right skid plate caught on a protruding screw. Contributing to the accident was the pilot's failure to adequately inspect the landing…
- [NTSB WPR16LA069](https://openairdocs.org/ntsb/WPR16LA069.md): Bell 47G 3B 1 · Carson City, NV · Accident · Minor injuries · Limited investigation · Final report · Feb 13, 2016 · N1181W · Substantial damage
  > The pilot's failure to maintain sufficient main rotor rpm, which resulted in a loss of helicopter control and a dynamic rollover.
- [NTSB CEN13LA463](https://openairdocs.org/ntsb/CEN13LA463.md): Bell 47G-3B-1 · Vinton, IA · Accident · No injuries · Limited investigation · Final report · Aug 6, 2013 · N83702 · Substantial damage
  > The pilot's operation of the helicopter at high gross weight and high density altitude while still in ground effect, which reduced the efficiency of the rotor system and the amount of lift produced, which resulted in a collision with terrain. Contributing to…
- [NTSB CEN13LA395](https://openairdocs.org/ntsb/CEN13LA395.md): Bell 47G-3B-1 · Plover, WI · Accident · Minor injuries · Limited investigation · Final report · Jul 6, 2013 · N7924S · Substantial damage
  > The pilot’s failure to maintain proper engine rpm, which resulted in a high rate of descent and ground impact.
- [NTSB CEN13FA357](https://openairdocs.org/ntsb/CEN13FA357.md): Bell 47G-3B-1 · Maplewood, MN · Accident · 1 fatal · Field investigation · Final report · Jun 19, 2013 · N5024N · Destroyed
  > The loss of helicopter control for reasons that could not be determined because an examination of the helicopter and its systems revealed no malfunctions or failures that would have precluded normal operation.
- [NTSB CEN11LA370](https://openairdocs.org/ntsb/CEN11LA370.md): Bell 47G-3B-1 · Lakeville, MN · Accident · Serious injuries · Limited investigation · Final report · May 25, 2011 · N96SH · Substantial damage
  > The loss of engine power due to a loose B-nut on the compressor discharge pressure bleed line.
- [NTSB WPR10CA470](https://openairdocs.org/ntsb/WPR10CA470.md): Bell 47G · Gaston, OR · Accident · No injuries · Data collection · Final report · Sep 26, 2010 · N7860S · Substantial damage
  > The pilot's failure to maintain tail rotor clearance while landing on a transport trailer positioned on an uneven surface.
- [NTSB LAX08CA229](https://openairdocs.org/ntsb/LAX08CA229.md): Bell 47G-3B-1 · Shafter, CA · Accident · No injuries · Data collection · Final report · Jul 15, 2008 · N1390X · Substantial damage
  > The pilot's failure to maintain adequate altitude while maneuvering. Contributing factors were the failure of the helicopter's lights during the night flight and the effect of that failure on the pilot's visual perception.

## 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 ('1181028', '118103A')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s.case_mkey = x.case_mkey AND s.aircrafts_position = x.position AND s."tier2Number" = '470' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent")))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/470/sequence?model=1181028

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