# NTSB investigations: Allison 250 SER 400HP, WA

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 SEA04LA090](https://openairdocs.org/ntsb/SEA04LA090.md): Bell 206B · Auburn, WA · Accident · No injuries · Limited investigation · Final report · May 23, 2004 · N206AF · Substantial damage
  > Loss of control for undetermined reasons.
- [NTSB SEA02LA172](https://openairdocs.org/ntsb/SEA02LA172.md): Hughes 500 · Carnation, WA · Accident · No injuries · Limited investigation · Final report · Sep 10, 2002 · N9263F · Substantial damage
  > The pilot's delayed power application during a practice power recovery autorotation.
- [NTSB SEA99LA082](https://openairdocs.org/ntsb/SEA99LA082.md): Hughes 369D · Southbend, WA · Accident · Minor injuries · Limited investigation · Final report · Jun 8, 1999 · N8306F · Substantial damage
  > The complete loss of power, due to a failure of the compressor impeller disk. Factors include the low altitude of the helicopter at the time of the power loss, and the need to autorotate in a confined area.
- [NTSB SEA97LA118](https://openairdocs.org/ntsb/SEA97LA118.md): Hughes 369D · Moclips, WA · Accident · No injuries · Limited investigation · Final report · May 21, 1997 · N8306F · Substantial damage
  > Inadequate installation of the fuel control by company maintenance personnel and a loose nut on a line. A disconnected Pc line was a factor.
- [NTSB SEA90LA081](https://openairdocs.org/ntsb/SEA90LA081.md): Hughes 369D · Kelso, WA · Accident · 1 fatal · Limited investigation · Final report · May 21, 1990 · N8306F · No damage
  > Failure of the pilot to keep the external load clear of obstacles (trees). Factors related to the accident were: failure of the pilot and ground crewman to follow safety procedures, and the proximity of the trees.
- [NTSB SEA87LA079](https://openairdocs.org/ntsb/SEA87LA079.md): Hughes 369HS · Yakima, WA · Accident · No injuries · Limited investigation · Final report · Apr 11, 1987 · N8313F · Substantial damage
  > Six miles from the airport, at cruise, the engine ceased operating due to fuel exhaustion. The plt had noticed the low fuel warning light on 10 minutes prior to the engine failure but elected to continue his flight. Autorotation was made from 1,000 feet AGL…
- [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 SEA85LA053](https://openairdocs.org/ntsb/SEA85LA053.md): Hughes 369D · Taholah, WA · Accident · Minor injuries · Limited investigation · Final report · Feb 4, 1985 · N8306F · Destroyed
  > The acft had lifted off during an external load operation when the plt felt a 'vibration/shudder'. The right skid contacted the ground and the helicopter rolled over during an attempt to maneuver the helicopter away from ground personnel. Inspection revealed…
- [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…
- [NTSB SEA80DYE14](https://openairdocs.org/ntsb/SEA80DYE14.md): Hughes 369 · Redmond, WA · Accident · No injuries · Closed · Feb 16, 1980 · N9205F · Substantial damage
- [NTSB SEA79FYP17](https://openairdocs.org/ntsb/SEA79FYP17.md): Hughes 369D · Spokane, WA · Accident · Minor injuries · Closed · May 9, 1979 · N8601F · Substantial damage
- [NTSB SEA78DYP03](https://openairdocs.org/ntsb/SEA78DYP03.md): Hughes 369D · Spokane, WA · Accident · No injuries · Closed · Oct 12, 1977 · N8601F · Substantial damage
- [NTSB SEA7LFYE02](https://openairdocs.org/ntsb/SEA7LFYE02.md): Hughes 369HS · Elma, WA · Accident · Minor injuries · Closed · Jul 2, 1975 · N82AL · Substantial damage
- [NTSB SEA72DYE38](https://openairdocs.org/ntsb/SEA72DYE38.md): Hughes 500 · Longmire, WA · Accident · Minor injuries · Closed · Jun 30, 1972 · N9068F · Substantial damage

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

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

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