# NTSB investigations: Allison 250-C20 series, OR

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 WPR13GA374](https://openairdocs.org/ntsb/WPR13GA374.md): Mcdonnell Douglas Helicopter 369E · Burns, OR · Accident · No injuries · Final report · Aug 12, 2013 · N62PJ · Substantial damage
  > The total loss of engine power during cruise flight due to the separation of one of the 4th-stage turbine wheel blades due to low-cycle fatigue cracking that had progressed to high-cycle fatigue cracking, which ultimately led to the overload failure of the…
- [NTSB WPR13CA057](https://openairdocs.org/ntsb/WPR13CA057.md): Hughes 369D · Sheridan, OR · Accident · Minor injuries · Data collection · Final report · Nov 27, 2012 · N163PJ · Substantial damage
  > The pilot’s failure to prevent the helicopter from entering a vortex ring state (settling with power) condition during an external load operation, which resulted in the helicopter’s main rotor blades impacting the truck.
- [NTSB WPR12LA328](https://openairdocs.org/ntsb/WPR12LA328.md): Hughes Helicopters 369E · The Dalles, OR · Accident · Serious injuries · Limited investigation · Final report · Jul 26, 2012 · N427WC · Substantial damage
  > The loss of engine power due to fuel starvation, which resulted from the fuel tank supply pickup becoming unported while the helicopter was pulling power lines.
- [NTSB WPR10CA314](https://openairdocs.org/ntsb/WPR10CA314.md): Bell 206B · Rickreall, OR · Accident · No injuries · Data collection · Final report · Jun 23, 2010 · N3194G · Substantial damage
  > A total loss of engine power due to fuel exhaustion as a result of the pilot's failure to ensure that adequate fuel was aboard for the flight.
- [NTSB SEA05CA200](https://openairdocs.org/ntsb/SEA05CA200.md): McDonnell Douglas 369E · Medford, OR · Accident · Minor injuries · Data collection · Final report · Sep 24, 2005 · N5207C · Substantial damage
  > In-flight collision with terrain during a precautionary landing. Factors include instrument meteorological conditions and pilot disorientation.
- [NTSB SEA04LA181](https://openairdocs.org/ntsb/SEA04LA181.md): Hughes 369D · Cottage Grove, OR · Accident · No injuries · Limited investigation · Final report · Sep 4, 2004 · N505ST · Substantial damage
  > In-flight loss of engine power during cruise for undetermined reasons.
- [NTSB SEA02LA137](https://openairdocs.org/ntsb/SEA02LA137.md): Bell 206B · Elsie, OR · Accident · No injuries · Limited investigation · Final report · Jul 24, 2002 · N60PH · Substantial damage
  > The shattering and separation of the forward right (pilot's) windscreen for undetermined reason(s).
- [NTSB SEA97LA072](https://openairdocs.org/ntsb/SEA97LA072.md): Hiller UH-12E · Glide, OR · Accident · Minor injuries · Limited investigation · Final report · Mar 14, 1997 · N545HA · Substantial damage
  > failure of the pilot to maintain clearance from a power transmission line. Factors relating to the accident included ambient light conditions, which made the power line hard to see.
- [NTSB SEA94LA109](https://openairdocs.org/ntsb/SEA94LA109.md): Bell 206B · Summerville, OR · Accident · Minor injuries · Limited investigation · Final report · Apr 25, 1994 · N35BL · Destroyed
  > The pilot did not maintain clearance from the wires. The overcast sky condiiton was a factor.
- [NTSB SEA92LA088](https://openairdocs.org/ntsb/SEA92LA088.md): Hughes 369E · Hillsboro, OR · Accident · No injuries · Limited investigation · Final report · May 1, 1992 · N5211Y · Substantial damage
  > The pilot in command's excessive application of collective.
- [NTSB SEA85LA020](https://openairdocs.org/ntsb/SEA85LA020.md): Hughes 369D · Kings Valley, OR · Accident · Minor injuries · Limited investigation · Final report · Nov 16, 1984 · N58256 · Destroyed
  > The plt attempted to fly the acft away from the site of a proposed load drop before the drop was completed. The FAA inspectors said the sling did not release properly. When the plt attempted to depart the area the acft struck the groundin a nose low attitude.…
- [NTSB SEA80FYM12](https://openairdocs.org/ntsb/SEA80FYM12.md): Hiller Acft UH-12E · Willamina, OR · Accident · No injuries · Closed · Jan 17, 1980 · N545HA · Substantial damage
- [NTSB SEA79FYK05](https://openairdocs.org/ntsb/SEA79FYK05.md): Hiller Acft UH-12E · Springfield, OR · Accident · No injuries · Closed · Feb 23, 1979 · N545HA · 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" = 'OR' 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 ('03020'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=03020&state=OR

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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.