NTSB investigations: Hiller UH-12E
12 cases on aircraft the registry lists as Hiller UH-12E, where the first occurrence was “Loss of control - in flight”. 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
| 1983 | 1 |
|---|---|
| 1984 | 1 |
| 1985 | 1 |
| 1987 | 1 |
| 1988 | 1 |
| 1989 | 1 |
| 1991 | 1 |
| 1993 | 1 |
| 1995 | 1 |
| 1996 | 1 |
| 1998 | 1 |
| 2001 | 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.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('4360122', '4360137')
AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o.\"occurrenceNumber\" = 1 AND o.\"occurrenceCode\" = 250))
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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('4360122', '4360137')
AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 250))
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 CHI01LA238Accident · No injuriesLimited investigationFinal reportHiller UH-12E · Hastings, NEAircraft control not being maintained by the pilot which resulted in the encountered settling with power flight condition during the initial climb. Factors to the accident were the reported variable winds during the takeoff and the corn crop.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 IAD96LA077Accident · Minor injuriesLimited investigationFinal reportHiller UH-12E · Hellam, PAthe pilot's loss of directional control during aerial application for undetermined reasons.NTSB SEA95LA077Accident · Serious injuriesLimited investigationFinal reportHiller UH-12E · Timber, ORThe 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 CHI93DTK02Accident · Minor injuriesFinal reportHiller UH-12E · Milbank, SDUndeterminedNTSB FTW92LA007Accident · No injuriesLimited investigationFinal reportHiller UH-12E · Palacios, TXThe pilot's inadequate preflight.NTSB DEN89LA084Accident · No injuriesLimited investigationFinal reportHiller UH-12E · Golden, COImproper in-flight planning/decision by the CFI which resulted in loss of tail rotor effectiveness and loss of directional control. Contributing factors were high density altitude, tailwind, and rough/uneven terrain.NTSB LAX88DVA16Accident · Minor injuriesFinal reportHiller UH-12E · Helm, CADuring an aerial application flight, the pilot lost control of the helicopter just after liftoff and collided with the terrain. Inspection of the wreckage revealed that the chemical trucks filler hose was still attached to the helicopter when it lifted off.NTSB MKC87LA145Accident · Minor injuriesLimited investigationFinal reportHiller 12E · Ulysess, KSDuring a helicopter aerial application operation, acft suffered a main rotor system hub failure. PIC was unable to control the acft and an uncontrolled descent resulted. Acft struck the terrain and was substantially damaged and the PIC suffered minor…NTSB LAX85FA199Accident · Serious injuriesField investigationFinal reportHiller UH12J3 · Klamath, CAThe helicopter was returning to a private landing pad after a reconaisance flight prior to sprating. At about 10FT AGL after flaring and leveling the pilot could not control a drift and roll to the left. The rotor blades struck the ground within about one…NTSB DEN84LA177Accident · No injuriesLimited investigationFinal reportHiller UH-12E · Granby, COThe helicopter plt was on a reconnaissance flt to survey a hilltop landing site in mountainous terrain. When he arrived, he made a high reconnaissance pass, then began a low reconnaissance apch. He estimated the wind was from 210 deg at 10 to 15 KTS with…NTSB LAX84LA010Accident · No injuriesLimited investigationFinal reportHiller UH12E · Los Banos, CAThe plt loaded the helicopter & started a spraying operation. He stated that as he pulled the helicopter up from the 1st spray run, it started shaking & went partially out of control. He was able to regain enough control to get the helicopter in level flt…