# NTSB investigations: Allison 250 SER 250HP, UT

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 WPR26FA082](https://openairdocs.org/ntsb/WPR26FA082.md): Bell Helicopter Textron 206L-1 · Kamas, UT · Accident · Serious injuries · Class 3 · Field · Preliminary report · Jan 18, 2026 · N138DD · Substantial damage
  > On January 18, 2026, about 1510 mountain standard time, a Bell 206L-1, N138DD, was substantially damaged when it was involved in an accident near Kamas, Utah. The pilot and three passengers received minor injuries. The helicopter was operated as a Title 14…
- [NTSB WPR14CA373](https://openairdocs.org/ntsb/WPR14CA373.md): Bell 407 · Moab, UT · Accident · Minor injuries · Data collection · Final report · Sep 11, 2014 · N142MA · Substantial damage
  > The pilot's failure to ensure adequate clearance from terrain while landing on sloped terrain.
- [NTSB SEA07LA021](https://openairdocs.org/ntsb/SEA07LA021.md): Hughes 369E · Jensen, UT · Accident · 1 fatal · Limited investigation · Final report · Nov 21, 2006 · N500FU · Substantial damage
  > The pilot's failure to maintain clearance with the transmission wires due to an inadquate visual lookout while maneuvering during a search and rescue flight.
- [NTSB SEA06LA124](https://openairdocs.org/ntsb/SEA06LA124.md): Hughes 369D · Salt Lake City, UT · Accident · No injuries · Limited investigation · Final report · Jun 20, 2006 · N88SE · Substantial damage
  > A loss of rotor rpm for undetermined reasons, resulting in a hard landing on top of the commercial building over which the helicopter was working.
- [NTSB SEA93FA048](https://openairdocs.org/ntsb/SEA93FA048.md): Bell 206B3 · Ogden, UT · Accident · 4 fatal · Field investigation · Final report · Jan 3, 1993 · N1078V · Destroyed
  > The pilot's continuation of VFR flight into instrument meteorological conditions, and his decision to continue his landing attempts under the adverse weather conditions. Factors contributing to the accident were the low clouds, fog and mountainous terrain.
- [NTSB DEN85FA027](https://openairdocs.org/ntsb/DEN85FA027.md): Bell 206B-11 · Bingham Canyon, UT · Accident · 4 fatal · Field investigation · Final report · Nov 15, 1984 · N1077T · Destroyed
  > Pilot was taking passeengers on a sightseeng flight over the kennecott copper mine, largest open pit copper mine in the world. Helicopter collided with unmarked power lines approx 185 ft AGL. Power lines are supported by two unmarked towers on opposing hills…
- [NTSB DEN84LA110](https://openairdocs.org/ntsb/DEN84LA110.md): Hiller FH 1100 · Provo, UT · Accident · No injuries · Limited investigation · Final report · Mar 16, 1984 · N5042F · Substantial damage
  > The acft was landed in soggy terrain and the right skid sank into the surface. One of the occupants of the helicopter deplaned to'lighten the load'and the plt overcorrected in an attempt to takeoff. The acrt rolled over onto its left side.
- [NTSB DEN83LA200](https://openairdocs.org/ntsb/DEN83LA200.md): Bell 206L-1 · Tucker, UT · Accident · Serious injuries · Limited investigation · Final report · Aug 26, 1983 · N3900B · Substantial damage
  > The helicopter was being used on a seismic data acquistion operation. While landing by a road in mountainous terrain at an elevation of aprx 8400 ft, the helicopter was observed to approach to a hover over the roadway. A considerable amount of dust was blown…

## 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."eventStateOrRegion" = 'UT' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03002', '03003'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=03002&state=UT

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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.