Fatal NTSB investigations: Hiller UH-12E

20 cases on aircraft the registry lists as Hiller UH-12E. Aircraft are matched to the registry by N-number and event date, checked against the reported serial number, make and model, so older matches can be wrong.

Cases per year

19642026
Fatal NTSB investigations: Hiller UH-12E per year, 1964–2026: 20 cases
19641
19661
19681
19711
19751
19772
19781
19791
19811
19861
19871
19881
19932
19941
19971
19981
20101
20151

Latest cases

Query with SQL
duckdb -csv -c "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"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

NTSB WPR15LA168Accident · 1 fatalLimited investigationFinal reportHiller UH 12E · Wasco, CAAn in-flight impact with terrain for reasons that could not be determined based on available evidence.May 27, 2015 · N138HA · Substantial damageNTSB WPR10FA440Accident · 3 fatalField investigationFinal reportHiller UH 12E · Kamiah, IDIn-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…Aug 31, 2010 · N67264 · Substantial damageNTSB SEA99FA013Accident · 1 fatalField investigationFinal reportHiller UH-12E · Marshall, WAThe 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.Nov 10, 1998 · N752GB · DestroyedNTSB SEA97LA117Accident · 1 fatalLimited investigationFinal reportHiller UH-12E · Miltonfreewater, ORThe main rotor blade separated due to fatigue. Factors were: an Airworthiness Directive was not properly performed, and inadequate inspection of the main rotor blades.May 21, 1997 · N3005J · Substantial damageNTSB CHI94LA191Accident · 1 fatalLimited investigationFinal reportHiller HU-12E · Watertown, SDthe pilot's failure to maintain a visual lookout. A factor associated with the accident was the powerlines.Jun 23, 1994 · N330CW · DestroyedNTSB DEN93FA033Accident · 3 fatalField investigationFinal reportHiller UH-12E · Applegate, ORThe pilot initiating flight into known adverse weather. Factors were: low ceiling, fog, and turbulence.Mar 16, 1993 · N5344V · DestroyedNTSB SEA93GA052Accident · 1 fatalFinal reportHiller UH-12E · Chinook, MTInattentive FBO personnel.Jan 15, 1993 · N28908 · Minor damageNTSB NYC88DGM01Accident · 1 fatalFinal reportHiller UH-12E · Lovely, PAThe undetermined loss of engine power while performing low level aerial application operations.Aug 4, 1988 · N5375V · Substantial damageNTSB SEA87FA106Accident · 1 fatalField investigationFinal reportHiller UH-12E · Shelton, WAThe 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.…May 28, 1987 · N28875 · DestroyedNTSB SEA86FA039Accident · 1 fatalField investigationFinal reportHiller-Soloy UH-12E · Horton, ORThe 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…Jan 16, 1986 · N40290 · DestroyedNTSB SEA81FA053Accident · 3 fatalClosedSoloy UH-12E · Riggins, IDAug 19, 1981 · N544HA · DestroyedNTSB LAX79FUK10Accident · 1 fatalClosedHiller UH-12E · Somerton, AZAug 24, 1979 · N62902 · DestroyedNTSB SEA78FYK06Accident · 1 fatalClosedHiller UH-12E · Reedsport, ORJan 20, 1978 · N65149 · Minor damageNTSB ANC77FA063Accident · 1 fatalClosedHiller 12EJ3 · Ketchikan, AKJul 28, 1977 · N5358V · DestroyedNTSB LAX77FA039Accident · 1 fatalClosedHiller UH-12E · Thermal, CAApr 10, 1977 · N90465 · DestroyedNTSB ANC76AA021Accident · 2 fatalClosedHiller Acft UH-12E · Painter Creek, AKAug 11, 1975 · N5379V · DestroyedNTSB SEA72FYE03Accident · 1 fatalClosedHiller 12E · Skykomish, WAJul 16, 1971 · N9749C · DestroyedNTSB ANC69A0016Accident · 2 fatalClosedHiller UH-12E · Ketchikan, AKAug 28, 1968 · N5357V · DestroyedNTSB LAX67A0050Accident · 1 fatalClosedHiller UH-12E · Castaic, CANov 17, 1966 · N5350V · DestroyedNTSB UNK65X0380Accident · 1 fatalClosedHiller UH12E · Bond, COOct 22, 1964 · N9748C · Substantial damage