# NTSB investigations: Hiller UH-12E, 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 SEA05CA104](https://openairdocs.org/ntsb/SEA05CA104.md): Hiller UH-12E · Estacada, OR · Accident · Minor injuries · Data collection · Final report · May 23, 2005 · N3030H · Substantial damage
  > The failure of the pilot to maintain landing skid clearance during hover taxi, which resulted in a dynamic rollover. A factor was the gusty wind condition.
- [NTSB SEA04LA073](https://openairdocs.org/ntsb/SEA04LA073.md): Hiller UH-12E · Haines, OR · Accident · Minor injuries · Limited investigation · Final report · Apr 26, 2004 · N9785C · Substantial damage
  > A momentary partial loss of power for undetermined reason(s) and the pilot's failure to maintain adequate RPM during his autorotation landing.
- [NTSB SEA02LA073](https://openairdocs.org/ntsb/SEA02LA073.md): Hiller UH-12E · Goshen, OR · Accident · No injuries · Limited investigation · Final report · Apr 22, 2002 · N3004T · Substantial damage
  > The failure of company maintenance personnel to identify and replace/repair the degraded exhaust stack. Contributing factors were the mis-rigged carburetor heat control and the pilot's failure to maintain appropriate rotor RPM. Additional contributing factors…
- [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 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 SEA95LA077](https://openairdocs.org/ntsb/SEA95LA077.md): Hiller UH-12E · Timber, OR · Accident · Serious injuries · Limited investigation · Final report · Apr 11, 1995 · N508HV · Substantial damage
  > The pilot's inadequate aircraft preflight during which he failed to notice the main rotor shipping block had not been removed, and the resultant restricted movement of the flight control system.
- [NTSB SEA94T#A01](https://openairdocs.org/ntsb/SEA94T%23A01.md): Hiller UH-12E · Eugene, OR · Accident · No injuries · Class 3 · Final report · May 6, 1994 · N94492 · Substantial damage
- [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 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 SEA85LA126](https://openairdocs.org/ntsb/SEA85LA126.md): Hiller UH-12E · Athena, OR · Accident · No injuries · Limited investigation · Final report · May 31, 1985 · N37HS · Destroyed
  > The acft settled back to the ground shortly after takeoff before achieving translatioanal lift. The plt was attempting to test a new spray unit that had been installed. He had put 80 gallons of water in the spray tanks.
- [NTSB SEA85LA107](https://openairdocs.org/ntsb/SEA85LA107.md): Hiller UH-12E · Fall Creek, OR · Accident · No injuries · Limited investigation · Final report · May 5, 1985 · N28872 · Substantial damage
  > The helicopter sustained substantial damage during a forced landing following a loss of power. According to the plt, the helicopter was refueled aprx 1 hr flt time prior to the accident. Cause of the power loss was not determined.
- [NTSB SEA84LA174](https://openairdocs.org/ntsb/SEA84LA174.md): Hiller UH-12E · Redmond, OR · Accident · Minor injuries · Limited investigation · Final report · Jul 16, 1984 · N1043L · Substantial damage
  > The acft collided with the ground after a in-flt main rotor blade separation during an aerial application flt. Inspection of the fracture surface of the failed blade revealed characteristics consistant with the high stress, low cycle fatigue. Lab findings…
- [NTSB SEA84LA091](https://openairdocs.org/ntsb/SEA84LA091.md): Hiller UH-12E · Buxton, OR · Accident · No injuries · Limited investigation · Final report · Apr 19, 1984 · N56BA · Substantial damage
  > The helicopter entered an uncontrolled right roll while lifting off from a trailer & struck the ground with the m/r. the plt reported the trailer was not level.
- [NTSB SEA84LA034](https://openairdocs.org/ntsb/SEA84LA034.md): Hiller UH-12E · Mapleton, OR · Accident · Minor injuries · Limited investigation · Final report · Jan 5, 1984 · N4027K · Substantial damage
  > While approaching the spray area, the acft was in a level attitude at 20 to 25 mph & about 100 ft AGL when the plt heard a loud bang & noted a loss of power. He attempted an autorotative landing. During touchdown on hilly terrain, the acft rolled to the right…
- [NTSB SEA82DYM07](https://openairdocs.org/ntsb/SEA82DYM07.md): Hiller Acft UH-12E · Nashville, OR · Accident · No injuries · Closed · Dec 3, 1981 · N161HA · Substantial damage
- [NTSB SEA81FYK07](https://openairdocs.org/ntsb/SEA81FYK07.md): Hiller Acft UH-12E · Umpqua, OR · Accident · Serious injuries · Closed · Mar 18, 1981 · N90467 · Substantial damage
- [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 SEA79FYM32](https://openairdocs.org/ntsb/SEA79FYM32.md): Hiller Acft UH-12E · Independence, OR · Accident · No injuries · Closed · May 11, 1979 · N161HA · Substantial damage
- [NTSB SEA79DYM23](https://openairdocs.org/ntsb/SEA79DYM23.md): Hiller Acft UH-12E · Friend, OR · Accident · No injuries · Closed · Mar 24, 1979 · N175HA · 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
- [NTSB SEA79FYM08](https://openairdocs.org/ntsb/SEA79FYM08.md): Hiller Acft Soloy · Lacomb, OR · Accident · No injuries · Closed · Dec 22, 1978 · N172ET · Substantial damage
- [NTSB SEA79DYM04](https://openairdocs.org/ntsb/SEA79DYM04.md): Soloy UH12E · Molalla, OR · Accident · No injuries · Closed · Nov 2, 1978 · N5381V · Substantial damage
- [NTSB SEA79FYM01](https://openairdocs.org/ntsb/SEA79FYM01.md): Hiller Acft UH-12E · Falls City, OR · Accident · No injuries · Closed · Oct 2, 1978 · N90476 · Substantial damage
- [NTSB SEA78DYA18](https://openairdocs.org/ntsb/SEA78DYA18.md): Hiller Acft UH-12E · Adrian, OR · Accident · No injuries · Closed · Jul 20, 1978 · N67696 · Destroyed
- [NTSB SEA78FYM16](https://openairdocs.org/ntsb/SEA78FYM16.md): Hiller UH-12E · Cannon Beach, OR · Accident · No injuries · Closed · Jan 20, 1978 · N62346 · Substantial damage
- [NTSB SEA78FYK06](https://openairdocs.org/ntsb/SEA78FYK06.md): Hiller UH-12E · Reedsport, OR · Accident · 1 fatal · Closed · Jan 20, 1978 · N65149 · Minor damage
- [NTSB SEA78FYM07](https://openairdocs.org/ntsb/SEA78FYM07.md): Hiller Acft UH-12E · Amity, OR · Accident · Minor injuries · Closed · Nov 7, 1977 · N6ZH · Destroyed
- [NTSB SEA78FYM06](https://openairdocs.org/ntsb/SEA78FYM06.md): Hiller Acft UH-12E · Depoe Bay, OR · Accident · Serious injuries · Closed · Nov 3, 1977 · N9786C · Substantial damage
- [NTSB SEA76FYC45](https://openairdocs.org/ntsb/SEA76FYC45.md): Hiller Acft UH-12E · Tillamook, OR · Accident · Serious injuries · Closed · May 14, 1976 · N9785C · Destroyed
- [NTSB SEA76DYC44](https://openairdocs.org/ntsb/SEA76DYC44.md): Hiller Acft UH-12E · Alsea, OR · Accident · No injuries · Closed · May 4, 1976 · N6ZH · Substantial damage
- [NTSB SEA75FYC03](https://openairdocs.org/ntsb/SEA75FYC03.md): Hiller Acft UH-12E · Dayton, OR · Accident · No injuries · Closed · Jul 16, 1974 · N104HA · Substantial damage
- [NTSB SEA74DYC49](https://openairdocs.org/ntsb/SEA74DYC49.md): Hiller Acft UH-12E · Independence, OR · Accident · No injuries · Closed · May 1, 1974 · N5332V · Substantial damage
- [NTSB SEA74DYI10](https://openairdocs.org/ntsb/SEA74DYI10.md): Hiller Acft UH-12E · London, OR · Accident · No injuries · Closed · Mar 24, 1974 · N90469 · Substantial damage
- [NTSB SEA74FYC39](https://openairdocs.org/ntsb/SEA74FYC39.md): Hiller Acft UH-12E · Sublimity, OR · Accident · No injuries · Closed · Mar 18, 1974 · N9749C · Destroyed
- [NTSB SEA74FYC36](https://openairdocs.org/ntsb/SEA74FYC36.md): Hiller Acft UH-12E · Mt Hood, OR · Accident · No injuries · Closed · Mar 5, 1974 · N5367V · Substantial damage
- [NTSB SEA70DVQ02](https://openairdocs.org/ntsb/SEA70DVQ02.md): Hiller Acft UH-12E · Greenleaf, OR · Accident · No injuries · Closed · Apr 4, 1970 · N5381V · Destroyed
- [NTSB SEA69D0200](https://openairdocs.org/ntsb/SEA69D0200.md): Hiller UH-12E · Estacada, OR · Accident · No injuries · Closed · Jan 21, 1969 · N160Z · Destroyed
- [NTSB SEA69D0181](https://openairdocs.org/ntsb/SEA69D0181.md): Hiller UH-12E · Brightwood, OR · Accident · No injuries · Closed · Dec 21, 1968 · N3820 · Substantial damage
- [NTSB SEA68F0289](https://openairdocs.org/ntsb/SEA68F0289.md): Hiller UH-12E · Newport, OR · Accident · Serious injuries · Closed · Apr 2, 1968 · N9757C · Destroyed
- [NTSB SEA66A0066](https://openairdocs.org/ntsb/SEA66A0066.md): Hiller UH-12E · Huntington, OR · Accident · No injuries · Closed · Jun 13, 1966 · N9785C · Substantial damage
- [NTSB SEA66A0044](https://openairdocs.org/ntsb/SEA66A0044.md): Hiller UH-12E · Heppner, OR · Accident · Serious injuries · Closed · Feb 24, 1966 · N9741C · Destroyed
- [NTSB SEA66A0013](https://openairdocs.org/ntsb/SEA66A0013.md): Hiller UH12E · Crowley, OR · Accident · No injuries · Closed · Aug 16, 1965 · N5341V · 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.aircraft_model_code IN ('4360122', '4360137'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

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