# NTSB investigations: Allison 250 SER 400HP: In flight collision with terrain/water

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 ATL07CA076](https://openairdocs.org/ntsb/ATL07CA076.md): Bell 206-B · Sevierville, TN · Accident · No injuries · Data collection · Final report · Apr 22, 2007 · N219SH · Substantial damage
  > The pilot's improper use of the flight controls while at a hover that resulted in the tail colliding with the ground, a subsequent hard landing, and collapse of the skids.
- [NTSB DEN05LA056](https://openairdocs.org/ntsb/DEN05LA056.md): Hughes 369HS · Provo, UT · Accident · No injuries · Limited investigation · Final report · Feb 3, 2005 · N9118F · Substantial damage
  > the pilot's improper in-flight planning and decision making, his failure to maintain terrain clearance, and the total failure of the tail rotor drive shaft as a result of the tail rotor strike.
- [NTSB LAX04LA281](https://openairdocs.org/ntsb/LAX04LA281.md): Bell 206B · Little Valley, CA · Accident · Serious injuries · Limited investigation · Final report · Jul 26, 2004 · N549W · Destroyed
  > the pilot's failure to maintain an adequate clearance from objects and terrain while maneuvering at low altitude. Factors in the accident were the high, rising terrain, and the high density altitude.
- [NTSB ANC00LA053](https://openairdocs.org/ntsb/ANC00LA053.md): Bell 206B · Homer, AK · Accident · No injuries · Limited investigation · Final report · May 1, 2000 · N301MH · Substantial damage
  > The pilot's misjudging the landing flare in whiteout/flat light conditions. Factors associated with the accident are the whiteout and flat lighting conditions.
- [NTSB IAD97FA032](https://openairdocs.org/ntsb/IAD97FA032.md): Mbb BO-105CBS · Penn Yan, NY · Accident · 3 fatal · Field investigation · Final report · Dec 13, 1996 · N90750 · Destroyed
  > the pilot's failure to maintain altitude/clearance from the terrain. Factors relating to the accident were: the pilot's diverted attention to the GPS, darkness, low ceiling, rising terrain, and high wind condition.
- [NTSB ANC94LA110](https://openairdocs.org/ntsb/ANC94LA110.md): Bell B-206 · Gustavus, AK · Accident · No injuries · Limited investigation · Final report · Aug 31, 1994 · N382EH · Substantial damage
  > The pilot misjudged his distance/altitude from the landing area, and his lack of recent night flying experience. Factors which contributed to the accident were: the pilot's failure to assure that he would be landing with sufficient light, and the dusk/dark…
- [NTSB LAX91LA205](https://openairdocs.org/ntsb/LAX91LA205.md): Bell 206 · Searchlight, NV · Accident · Minor injuries · Limited investigation · Final report · May 6, 1991 · N49720 · Destroyed
  > Cannot be determined in that the helicopter was stolen and the certainty of the resulting damage to the helicopter may have been intentional or accidental.
- [NTSB SEA87LA059](https://openairdocs.org/ntsb/SEA87LA059.md): Bell 206B-III · Dayton, WA · Accident · No injuries · Limited investigation · Final report · Feb 20, 1987 · N90327 · Destroyed
  > Plt lifted off with fertilizer bucket on 3-FT external hook. As fwd motion commenced, acft settled slightly, dragging bucket on ground and tipping it over. Plt attempted to recover by backing up, but skid caught on bucket, causing loss of control.
- [NTSB DEN83FA045](https://openairdocs.org/ntsb/DEN83FA045.md): Bell 206B III · Sula, MT · Accident · 1 fatal · Field investigation · Final report · Jan 6, 1983 · N55LW · Substantial damage
  > The helicopter crashed tail low and rolled over in an open field during marginal weather. The pilot was flying on an expired student certificate and expired medical. According to a pilot who had worked with him the pilot had no helicopter rating. Witnesses…
- [NTSB SEA82DA055](https://openairdocs.org/ntsb/SEA82DA055.md): Hughes 500C · Darrington, WA · Accident · No injuries · Final report · Apr 19, 1982 · N9131F · Substantial damage
  > During an approach to a 9100 foot high snow covered landing site the wind shifted to a tailwind condition. The pilot elected to continue and attempted a skid on landing. While skidding through the snow the left skid impacted rising terrain underneath a 12…

## 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 ('03013', '03012')
    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" = 230))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=03013&occurrence=230

---
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.