NTSB investigations: Hiller UH-12E, MN
14 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
| 1977 | 2 |
|---|---|
| 1978 | 1 |
| 1981 | 1 |
| 1982 | 2 |
| 1983 | 2 |
| 1987 | 1 |
| 1988 | 1 |
| 1996 | 1 |
| 1998 | 1 |
| 2008 | 1 |
| 2022 | 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 c.\"eventStateOrRegion\" = 'MN' 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"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 c."eventStateOrRegion" = 'MN' 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" 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 CEN22LA318Accident · Serious injuriesClass 3 · LimitedFinal reportHiller UH12E · Becker, MNThe in-flight failure of the main rotor mast hub due to several undetected fatigue fractures.NTSB CHI08CA252Accident · No injuriesData collectionFinal reportHiller UH-12E · Cokato, MNThe pilot did not visually identify and maintain clearance with the power lines, and the pilot's inability to maintain control of the helicopter once it contacted the power lines. Factors associated with the accident were the low altitude operations being…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 CHI96LA151Accident · Minor injuriesLimited investigationFinal reportHiller UH-12E · Big Lake, MNthe pilot's inadequate preflight of the helicopter by not having removed a tiedown strap before attempting takeoff.NTSB CHI88DER06Accident · No injuriesFinal reportHiller UH-12E · Buffalo Lake, MNWhen the helicopter lifted off, the left tail rotor cable separated. Directional control was lost and the aircraft collided with the terrain. The pilot reported no injuries, however the helicopter sustained substantial damage. An inspection of the left tail…NTSB CHI87DER03Accident · No injuriesFinal reportHiller UH-12ET · Big Lake, MNAircraft was being maneuvered for landing on a ground support trailer when it experienced a power failure. Due to high trees autorotation was made to adjacent field. Aircraft landed on rough/uneven terrain and rolled over. Investigation revealed contaminated…NTSB CHI83LA321Accident · No injuriesLimited investigationFinal reportHiller UH-12E · Brooklyn Park, MNThe plt reported that he was spraying the end rows of a field when the helicopter approached some wires. He stated that he saw the wires at the last second & tried to get under them. Reportedly, the helicopter crossed below a set of power lines, but struck a…NTSB CHI83LA297Accident · No injuriesLimited investigationFinal reportHiller UH-12E · Brooten, MNThe helicopter had just lifted off of the flatbed of a truck when it started to spin. The plt lowered the collective, reduced the power & landed beside the truck. During touchdown, the main rotor blades struck the truck. An investigation revealed that the…NTSB CHI82DA301Accident · No injuriesFinal reportHiller 12E · Palisade, MNAircraft lost power, pilot autorotated at 20 feet AGL. Made hard forced landing and aircraft rolled over. Piston rod failed because cap bolt was undertorqued.NTSB CHI82DA162Accident · No injuriesFinal reportHiller 12E · Benson, MNHelicopter flying at 250 feet to stay below clouds had engine failure. Landed downwind in muddy field. Right skid collapsed.NTSB CHI81FER59Accident · No injuriesClosedHiller Acft UH-12E · Glyndon, MNNTSB MKC78DER39Accident · No injuriesClosedHiller UH-12E · Bemidji, MNNTSB MKC78DER08Accident · No injuriesClosedHiller UH-12E · Bemidji, MNNTSB MKC77FER39Accident · Serious injuriesClosedHiller Acft UH-12E · Big Lake, MN