NTSB investigations: Lycoming HIO-360 series

24 cases on aircraft whose registry engine model is Lycoming HIO-360 series, where the first occurrence was “In flight collision with terrain/water”. 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

19822026
NTSB investigations: Lycoming HIO-360 series per year, 1982–2026: 24 cases
19821
19831
19871
19881
19892
19933
19992
20001
20012
20022
20035
20051
20061
20071

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.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41524')
      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\" = 230))
  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 SEA07CA220Accident · No injuriesData collectionFinal reportHughes 269C · Three Forks, MTThe student pilot's failure to maintain control of the aircraft during autorotation. The flight instructor's inadequate supervision was a factor.Jul 30, 2007 · N428MS · Substantial damageNTSB CHI06CA168Accident · No injuriesData collectionFinal reportSchweizer 269C · Grand Forks, NDThe dual student's failure to maintain rotor speed during the recovery from the intentional autorotation and the flight instructor's delayed remedial action. Contributing factors were the flight crew's intentional autorotation and dual student's misjudged…Jun 17, 2006 · N1675U · Substantial damageNTSB DEN05LA068Accident · No injuriesLimited investigationFinal reportEnstrom F-28C · Morrison, COthe pilot's failure to maintain rotor RPM during the approach which resulted in a landing short of the helipad.Apr 13, 2005 · N5690K · Substantial damageNTSB CHI04LA030Accident · Minor injuriesLimited investigationFinal reportHughes 269B · Louisville, KYThe pilot's improper in-flight decision to allow the passenger to manipulate the aircraft flight controls, his failure to maintain altitude/clearance from the river, and his inadequate remedial action. A related factor was the low altitude.Nov 10, 2003 · N1093D · Substantial damageNTSB CHI04LA015Accident · 1 fatalLimited investigationFinal reportSchweizer 269C · Fenton, MIThe intentional low altitude flight maneuvering and the ostentatious display by the pilot. The water was a factor to the accident.Oct 18, 2003 · N456JP · Substantial damageNTSB LAX03CA264Accident · No injuriesData collectionFinal reportHughes 269C · Columbia, CAthe student pilot's improper execution of the autorotation. Also causal, was the CFI's delayed remedial action and supervision of the flight.Aug 25, 2003 · N58363 · Substantial damageNTSB SEA03LA151Accident · No injuriesLimited investigationFinal reportHughes 269C · Snohomish, WAThe dual students failure to maintain clearance from the terrain during the go-around from a simulated autorotational flare, and the instructor pilot's failure to take adequate remedial action to keep the dual student from allowing the aircraft to impact the…Jul 24, 2003 · N53KF · Substantial damageNTSB LAX03FA134Accident · 2 fatalField investigationFinal reportHughes 269B · Auburn, CAthe misjudged flare maneuver by an unknown crewmember during a likely practice autorotation that resulted in an in-flight collision with terrain.Apr 11, 2003 · N16133 · DestroyedNTSB SEA02LA075Accident · No injuriesLimited investigationFinal reportEnstrom F-28C · Hot Springs, MTThe pilot's failure to adequately compensate for unfavorable wind conditions. Factors include unfavorable/shifting winds, and a tailwind gust.Apr 20, 2002 · N51769 · Substantial damageNTSB MIA02LA070Accident · No injuriesLimited investigationFinal reportHughes 269C · Bessemer, ALThe failure of the flight instructor to adequately monitor the student's rotorcraft control, resulting in an abrupt cyclic input causing a tail rotor strike of the terrain while entering a hover, and the resulting rollover during an uncontrolled descent.Mar 24, 2002 · N7490F · Substantial damageNTSB CHI01FA257Accident · 2 fatalField investigationFinal reportSchweizer 269C · Waterloo, INAircraft control not maintained for undetermined reasons.Aug 5, 2001 · N6129M · Substantial damageNTSB FTW01LA103Accident · Serious injuriesLimited investigationFinal reportJoe Underwood Lazer Z · Bossier City, LAthe pilot's failure to maintain control during the low level maneuver. A contribiting factor was the windshear.Apr 22, 2001 · N363WB · Substantial damageNTSB SEA01LA003Accident · No injuriesLimited investigationFinal reportEnstrom F-28F · Twin Falls, IDThe pilot's failure to maintain adequate rotor rpm. Unsuitable terrain was selected for the maintenance test flight operation.Oct 10, 2000 · N223RS · Substantial damageNTSB SEA99FA168Accident · 1 fatalField investigationFinal reportSchweizer 269C · Westport, ORThe pilot's failure to maintain clearance from terrain. Factors include low clouds and visibility and near-night light conditions.Aug 8, 1999 · N383T · DestroyedNTSB DEN99LA092Accident · Minor injuriesLimited investigationFinal reportHughes 269A · Parkman, WYThe pilot's inadequate in-flight planning by exceeding the helicopter's performance climb capability. Factors were the downdraft encountered during initial climb following takeoff, and the high density altitude.Jun 1, 1999 · N7052L · Substantial damageNTSB MIA93LA177Accident · No injuriesLimited investigationFinal reportSchweizer 269C · Punta Gorda, FLThe pilot-in-command's improper use of the flight controls (cyclic and collective pitch) during a simulated autorotation with turn, resulting in an in flight collision with terrain with the tail skid and tailrotor blades.Aug 18, 1993 · N95AF · Substantial damageNTSB LAX93FA260Accident · 1 fatalField investigationFinal reportHughes 269A · Henderson, NVthe pilot's improper use of the collective control and his failure to maintain adequate RPM during an autorotative descent during a practice power off landing. A factor which contributed to the accident related to the pilot's lack of recent experience…Jun 19, 1993 · N9048R · DestroyedNTSB LAX93LA227Accident · No injuriesLimited investigationFinal reportHughes 269C · Van Nuys, CAthe student pilot's failure to maintain the altitude while maneuvering toward the parking area. The student pilot's lack of total experience was a factor in this accident.May 26, 1993 · N58407 · Substantial damageNTSB CHI89DEV06Accident · No injuriesFinal reportHughes 269C · Millersville, ILLoss of rotor RPM for an undetermined reason during a turn to reverse direction while applying agricultural chemicals.Jun 6, 1989 · N7439F · DestroyedNTSB FTW89DRG06Accident · 1 fatalFinal reportHughes 269C · Rocksprings, TXThe pilot diverted his attention from operation of the helicopter, failed to maintian proper rotor RPM, and failed to maintain altitude (clearance) above the ground, while maneuvering at low altitude. A contributing factor was his impairment from use of a…May 18, 1989 · N58228 · DestroyedNTSB MIA89LA018Accident · No injuriesLimited investigationFinal reportSchweizer 269C · Arcadia, FLAfter making an apch to 'the numbers' on rwy 5, the plt decelerated the helicopter & began to air taxi to the refueling area. Subsquently, while decelerating and/or while taxiing, the tail rotor collided with terrain.Oct 28, 1988 · N75068 · Substantial damageNTSB SEA88LA022Accident · Minor injuriesLimited investigationFinal reportHughes 269B · Las Vegas, NVDuring practice autorotation the pilot flared excessively high and the tail boom struck the ground. The pilot then lost control of the aircraft. The density alt was 2616 feet. A rt quartering tailwind was present.Nov 24, 1987 · N22730 · DestroyedNTSB MIA83LA087Accident · No injuriesLimited investigationFinal reportHughes 269A · St. Petersburg, FLThe helicopter contacted the ground with a skid during a hover and ended up in a dynamic roll over. This was a dual instructional flt and the student was at the controls in a hover at the runways end awaiting twr instructions when the right skid became stuck…Mar 18, 1983 · N9020M · Substantial damageNTSB SEA82DA019Accident · No injuriesFinal reportHughes 269C · S.E. Of Malta, IDThe purpose of the flight was for predator (coyote) control. The pilot was following a coyote at a low-altitude, moderate-speed air taxi over snow and sagebrush covered terrain. One of the aircraft's snowboards caught several sagebrush limbs and the pilot…Jan 15, 1982 · N58203 · Substantial damage