# Fatal NTSB investigations: Hiller UH-12E

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 WPR15LA168](https://openairdocs.org/ntsb/WPR15LA168.md): Hiller UH 12E · Wasco, CA · Accident · 1 fatal · Limited investigation · Final report · May 27, 2015 · N138HA · Substantial damage
  > An in-flight impact with terrain for reasons that could not be determined based on available evidence.
- [NTSB WPR10FA440](https://openairdocs.org/ntsb/WPR10FA440.md): Hiller UH 12E · Kamiah, ID · Accident · 3 fatal · Field investigation · Final report · Aug 31, 2010 · N67264 · Substantial damage
  > In-flight impact of a passenger's metal clipboard with the helicopter’s tail rotor, which resulted in destruction of the tail rotor and subsequent loss of control of the helicopter. The original location of the clipboard and how it became free could not be…
- [NTSB SEA99FA013](https://openairdocs.org/ntsb/SEA99FA013.md): Hiller UH-12E · Marshall, WA · Accident · 1 fatal · Field investigation · Final report · Nov 10, 1998 · N752GB · Destroyed
  > The loss of the bolt that connects the lateral cyclic linkage push rod to the lower end of the upper firewall-mounted lateral cyclic linkage bellcrank, resulting in an uncontrolled descent into the terrain.
- [NTSB SEA97LA117](https://openairdocs.org/ntsb/SEA97LA117.md): Hiller UH-12E · Miltonfreewater, OR · Accident · 1 fatal · Limited investigation · Final report · May 21, 1997 · N3005J · Substantial damage
  > The main rotor blade separated due to fatigue. Factors were: an Airworthiness Directive was not properly performed, and inadequate inspection of the main rotor blades.
- [NTSB CHI94LA191](https://openairdocs.org/ntsb/CHI94LA191.md): Hiller HU-12E · Watertown, SD · Accident · 1 fatal · Limited investigation · Final report · Jun 23, 1994 · N330CW · Destroyed
  > the pilot's failure to maintain a visual lookout. A factor associated with the accident was the powerlines.
- [NTSB DEN93FA033](https://openairdocs.org/ntsb/DEN93FA033.md): Hiller UH-12E · Applegate, OR · Accident · 3 fatal · Field investigation · Final report · Mar 16, 1993 · N5344V · Destroyed
  > The pilot initiating flight into known adverse weather. Factors were: low ceiling, fog, and turbulence.
- [NTSB SEA93GA052](https://openairdocs.org/ntsb/SEA93GA052.md): Hiller UH-12E · Chinook, MT · Accident · 1 fatal · Final report · Jan 15, 1993 · N28908 · Minor damage
  > Inattentive FBO personnel.
- [NTSB NYC88DGM01](https://openairdocs.org/ntsb/NYC88DGM01.md): Hiller UH-12E · Lovely, PA · Accident · 1 fatal · Final report · Aug 4, 1988 · N5375V · Substantial damage
  > The undetermined loss of engine power while performing low level aerial application operations.
- [NTSB SEA87FA106](https://openairdocs.org/ntsb/SEA87FA106.md): Hiller UH-12E · Shelton, WA · Accident · 1 fatal · Field investigation · Final report · May 28, 1987 · N28875 · Destroyed
  > The pilot was properly certificated for the flight; however, due to operator insurance restrictions, all prior commercial flights had required the owner/operator to accompany this pilot, therefore this was the pilot's first commercial flight as sole pilot.…
- [NTSB SEA86FA039](https://openairdocs.org/ntsb/SEA86FA039.md): Hiller-Soloy UH-12E · Horton, OR · Accident · 1 fatal · Field investigation · Final report · Jan 16, 1986 · N40290 · Destroyed
  > The fork connecting the rotorcraft's blue blade to the main rotor hub separated after a long term fatigue crack had spread through more than 60% of the fork circumference. The operator failed to carry out the appropriate inspection of the fork unit as…
- [NTSB SEA81FA053](https://openairdocs.org/ntsb/SEA81FA053.md): Soloy UH-12E · Riggins, ID · Accident · 3 fatal · Closed · Aug 19, 1981 · N544HA · Destroyed
- [NTSB LAX79FUK10](https://openairdocs.org/ntsb/LAX79FUK10.md): Hiller UH-12E · Somerton, AZ · Accident · 1 fatal · Closed · Aug 24, 1979 · N62902 · Destroyed
- [NTSB SEA78FYK06](https://openairdocs.org/ntsb/SEA78FYK06.md): Hiller UH-12E · Reedsport, OR · Accident · 1 fatal · Closed · Jan 20, 1978 · N65149 · Minor damage
- [NTSB ANC77FA063](https://openairdocs.org/ntsb/ANC77FA063.md): Hiller 12EJ3 · Ketchikan, AK · Accident · 1 fatal · Closed · Jul 28, 1977 · N5358V · Destroyed
- [NTSB LAX77FA039](https://openairdocs.org/ntsb/LAX77FA039.md): Hiller UH-12E · Thermal, CA · Accident · 1 fatal · Closed · Apr 10, 1977 · N90465 · Destroyed
- [NTSB ANC76AA021](https://openairdocs.org/ntsb/ANC76AA021.md): Hiller Acft UH-12E · Painter Creek, AK · Accident · 2 fatal · Closed · Aug 11, 1975 · N5379V · Destroyed
- [NTSB SEA72FYE03](https://openairdocs.org/ntsb/SEA72FYE03.md): Hiller 12E · Skykomish, WA · Accident · 1 fatal · Closed · Jul 16, 1971 · N9749C · Destroyed
- [NTSB ANC69A0016](https://openairdocs.org/ntsb/ANC69A0016.md): Hiller UH-12E · Ketchikan, AK · Accident · 2 fatal · Closed · Aug 28, 1968 · N5357V · Destroyed
- [NTSB LAX67A0050](https://openairdocs.org/ntsb/LAX67A0050.md): Hiller UH-12E · Castaic, CA · Accident · 1 fatal · Closed · Nov 17, 1966 · N5350V · Destroyed
- [NTSB UNK65X0380](https://openairdocs.org/ntsb/UNK65X0380.md): Hiller UH12E · Bond, CO · Accident · 1 fatal · Closed · Oct 22, 1964 · N9748C · 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."highestInjuryLevel" = 'Fatal'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('4360122', '4360137'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?fatal=1&model=4360122

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