NTSB investigations: Allison 250 series

89 cases on aircraft whose registry engine model is Allison 250 series. 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, newest first

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.engine_model_code IN ('03014', '03019'))
  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 SEA90LA025Accident · No injuriesLimited investigationFinal reportHiller UH-12E · Raymond, WALoss of engine power due to fatigue failure of the impeller. The helicopter was substantially damaged as a result of a roll-over on uneven terrain.Nov 29, 1989 · N9762C · Substantial damageNTSB 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 LAX85LA305Accident · No injuriesLimited investigationFinal reportHiller UH-12E · Gonzales, CAWhile cruising during an ag flight the acft's eng began losing pwr. At the time the acft was about 50 ft AGL & was travelling at 50 mph. The plt made a forced ldg onto a nearby plowed fld. Upon touchdown the rt skid dug into a furrow & the acft rolled over.…Jul 5, 1985 · N161HA · Substantial damageNTSB CHI85LA254Accident · No injuriesLimited investigationFinal reportBell 47G-4 · Lakeville, MNThe acft was being landed on a trailer for transportation. Upon touchdown the right skid hooked on the landing guides and the helicopter rolled to the right side. The main rotor blades struck the ground, the left fuel tank ruptured and an explosion and fire…Jun 26, 1985 · N3094G · Substantial damageNTSB LAX85LA002Accident · Minor injuriesLimited investigationFinal reportHiller UH-12E · Firebaugh, CAThe acft collided with terrain while on an aerial application flt. The plt stated he, 'heard a loud bang' while spraying. Then the 'nose of the helicopter dove radically down', and he crashed into the field. Examination of the site revealed that one of the…Oct 5, 1984 · N161HA · Substantial damageNTSB LAX84LA428Accident · Serious injuriesLimited investigationFinal reportHiller UH-12ET · Delano, CAThe Hiller UH-12 helicopter (with a soloy conversion) was on a spray run when the eng began losing power. The plt headed for an 'open spot in the trees', but all power was lost the acft collided with almond trees. Only 15 to 18 ozs of fuel were remaining in…Aug 4, 1984 · N5359V · Substantial damageNTSB FTW84LA282Accident · Minor injuriesLimited investigationFinal reportBell 47G-5A · Houma, LAThe helicopter autorotated into trees and marsh land after a partial loss of power. The acft was on a pipeline patrol atlow alt at the time of the power loss. Examination of the engine after the accident revealed that the fuel control governor spring, p/n…Jun 21, 1984 · N14807 · Substantial damageNTSB MIA84LA179Accident · No injuriesLimited investigationFinal reportBell 47G-5 · Jupiter, FLThe acft crashed landed after a partial loss of power. During an exam of the eng, the compressor bleed control valve was found stuck open causing an improper fuel/air mixture.Jun 7, 1984 · N1201W · Substantial damageNTSB NYC84FGM04Accident · No injuriesFinal reportHiller UH-12E · Sigel, PAThe plt was on an aerial application flt over a wooded area. According to him, he had a tail rotor problem & it was necessary to extend his glide to reach an open area. Subsequently, the helicopter landed hard & the main rotor blades struck & severed the tail…Jun 2, 1984 · N109EH · Substantial damageNTSB ANC83LA172Accident · No injuriesLimited investigationFinal reportHiller-Soloy UH12E · Cape Yakataga, AKThe helicopter rolled over during a forced landing on a beach after the engine quit. Discussions with the plt owner of the company verified that the acft had run out of fuel. The owner had warned his pilots to visually check fuel on the helicopters due to…Sep 15, 1983 · N3324F · Substantial damageNTSB SEA82DA164Accident · No injuriesFinal reportHiller-Soloy UH-12E · Spirit Lake, WAPilot performed autorotation from 2000 feet to check RPM. At 200-300 feet when collective was added power loss occurred. Aircraft landed hard and severed tail boom. Logging support operations.Sep 15, 1982 · N513HA · Substantial damageNTSB SEA82FYM11Accident · Minor injuriesFinal reportHiller UH-12E · Mount Angle, ORThe aircraft was being used on an external load operation. On his fourth load, the pilot was to transport a 1190 lb electric pump and fan from the back of a pickup truck. While preparing to lift the load, the pilot was not satisfied with its position. He…Mar 8, 1982 · N59366 · DestroyedNTSB SEA82DYM07Accident · No injuriesClosedHiller Acft UH-12E · Nashville, ORDec 3, 1981 · N161HA · Substantial damageNTSB DEN82FTM02Accident · No injuriesClosedSoloy 47 · Fruitland, UTNov 5, 1981 · N1170W · Substantial damageNTSB LAX81DVD28Accident · No injuriesClosedHiller Acft UH-12E · Orleans, CAMay 30, 1981 · N62409 · Substantial damageNTSB SEA81DYE08Accident · No injuriesClosedHiller Acft UH-12E · Forks, WANov 19, 1980 · N542HA · Substantial damageNTSB LAX81DXQ01Accident · No injuriesClosedHiller Acft UH-12E · Quincy, CAOct 1, 1980 · N543HA · Substantial damageNTSB SEA80DYM55Accident · No injuriesClosedHiller Acft UH-12E · Tillamook, ORAug 19, 1980 · N59366 · Substantial damageNTSB SEA80DYE32Accident · Serious injuriesClosedHiller Acft UH-12E · Forks, WAMay 15, 1980 · N5359V · DestroyedNTSB LAX80DVG30Accident · Minor injuriesClosedHiller UH-12J · Frks Of Salmn, CAApr 24, 1980 · N67042 · DestroyedNTSB SEA79FYM32Accident · No injuriesClosedHiller Acft UH-12E · Independence, ORMay 11, 1979 · N161HA · Substantial damageNTSB SEA79DYM23Accident · No injuriesClosedHiller Acft UH-12E · Friend, ORMar 24, 1979 · N175HA · Substantial damageNTSB ANC78FA057Accident · Minor injuriesClosedHiller UH12E3 · Livengood, AKJul 23, 1978 · N9762C · Substantial damageNTSB SEA78FYE16Accident · No injuriesClosedHiller Acft UH-12E · Forks, WAMar 20, 1978 · N5359V · Substantial damageNTSB SEA78FYK06Accident · 1 fatalClosedHiller UH-12E · Reedsport, ORJan 20, 1978 · N65149 · Minor damageNTSB SEA78FTA08Accident · Minor injuriesClosedBell 47G3B1 · Billings, MTDec 20, 1977 · N7860S · DestroyedNTSB SEA76DYG67Accident · No injuriesClosedHiller Acft UH-12E · Clark Fork, IDSep 27, 1976 · N62409 · Substantial damageNTSB SEA76DYE65Accident · Serious injuriesClosedHiller Acft UH-12E · Humptulips, WASep 7, 1976 · N48001 · Substantial damageNTSB SEA76DYG44Accident · No injuriesClosedBell 47G-3B · Palouse, WAApr 21, 1976 · N2240W · DestroyedNTSB ANC76DAG17Accident · No injuriesClosedHiller Acft UH-12E · Kenai, AKJul 21, 1975 · N5359V · DestroyedNTSB SEA76FTI02Accident · No injuriesClosedBell 47G3B1 · Elliston, MTJul 9, 1975 · N1170W · Substantial damageNTSB ANC75DAD06Accident · No injuriesClosedHiller Acft UH-12E · Ketchikan, AKMay 12, 1975 · N107HA · Substantial damageNTSB DEN75AD022Accident · Minor injuriesClosedBell 47G3B1 · Vernal, UTOct 26, 1974 · N1170W · Substantial damageNTSB ANC75AA021Accident · Minor injuriesClosedHiller Acft UH-12E · Ketchikan, AKSep 1, 1974 · N112EC · DestroyedNTSB SEA74DYG50Accident · Minor injuriesClosedBell 47G3B2 · Clarkston, WAJun 23, 1974 · N8169J · DestroyedNTSB MKC74FCA12Accident · No injuriesClosedBell 47G-5 · Creve Coeur, MOOct 22, 1973 · N2251W · Substantial damageNTSB DIA69F0110Accident · Minor injuriesClosedBell 47G-5 · Roanoke, VANov 22, 1968 · N1201W · Substantial damageNTSB NYC67A0018Accident · No injuriesClosedBell 47G-4 · Savannah, NYJul 26, 1966 · N3094G · Substantial damageNTSB ANC67A0006Accident · No injuriesClosedHiller UH12E4 · Fairbanks, AKJul 15, 1966 · N9762C · Substantial damage