NTSB investigations: Hiller UH-12E, 1998
7 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
| 1964 | 9 |
|---|---|
| 1965 | 14 |
| 1966 | 15 |
| 1967 | 7 |
| 1968 | 8 |
| 1969 | 4 |
| 1970 | 3 |
| 1971 | 5 |
| 1972 | 3 |
| 1973 | 8 |
| 1974 | 14 |
| 1975 | 18 |
| 1976 | 16 |
| 1977 | 14 |
| 1978 | 25 |
| 1979 | 19 |
| 1980 | 21 |
| 1981 | 18 |
| 1982 | 8 |
| 1983 | 15 |
| 1984 | 14 |
| 1985 | 7 |
| 1986 | 9 |
| 1987 | 8 |
| 1988 | 12 |
| 1989 | 9 |
| 1990 | 2 |
| 1991 | 5 |
| 1992 | 6 |
| 1993 | 10 |
| 1994 | 6 |
| 1995 | 6 |
| 1996 | 9 |
| 1997 | 6 |
| 1998 | 7 |
| 1999 | 6 |
| 2000 | 2 |
| 2001 | 3 |
| 2002 | 2 |
| 2003 | 3 |
| 2004 | 1 |
| 2005 | 4 |
| 2007 | 2 |
| 2008 | 5 |
| 2009 | 1 |
| 2010 | 6 |
| 2011 | 4 |
| 2013 | 1 |
| 2014 | 2 |
| 2015 | 2 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 1 |
| 2021 | 2 |
| 2022 | 2 |
| 2024 | 1 |
| 2025 | 2 |
| 2026 | 1 |
Where
Open the mapLatest 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 year(c.\"eventDate\") = 1998
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.
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 year(c."eventDate") = 1998
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" DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
NTSB SEA99LA022Accident · No injuriesLimited investigationFinal reportHiller UH-12E · Wenatchee, WAFuel exhaustion due to the pilot's failure to accomplish refueling.NTSB 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.NTSB CHI98LA312Accident · Serious injuriesLimited investigationFinal reportHiller UH-12E · Shelton, NEThe pilot mismanaged the fuel which led to fuel starvation and subsequent loss of engine power.NTSB SEA98LA124Accident · Minor injuriesLimited investigationFinal reportHiller UH-12E · Eltopia, WAFatigue of the control rotor blade spar and failure of the maintenance inspector to follow the procedures set forth in the airworthiness directive.NTSB CHI98LA218Accident · No injuriesLimited investigationFinal reportHiller UH-12E · Park Rapids, MNthe pilot's failure to maintain control of aircraft. Factors were the congested helipad conditions and wind gusts.NTSB FTW98LA253Accident · No injuriesLimited investigationFinal reportHiller UH-12E · Delaplaine, ARThe failure of maintenance personnel to comply with and airworthiness directive, which resulted in failure of the planetary gear due to lack of lubrication. A contributing factors was the lack of suitable terrain for the pilot to execute a forced landing.NTSB LAX98LA089Accident · No injuriesLimited investigationFinal reportHiller UH-12E · Chico, CAFuel exhaustion due to the pilot's failure to ensure that an adequate fuel supply was onboard. A contributing factor was related to the fuel quantity gage's erroneous indication of fuel.