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NTSB investigations: Lycoming HIO-360 series

24 cases on aircraft whose registry engine model is Lycoming HIO-360 series, where the first occurrence was “Hard landing”. 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

19872026

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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\" = 200))
  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 CHI08CA020Accident · Serious injuriesData collectionFinal reportSchweizer 269C · Hazelton, INThe pilot's failure to maintain adequate main rotor speed during the intentional autorotation, and his subsequent inability to reduce the descent rate prior to impact. A contributing factor was the intentional autorotation initiated by the pilot.Dec 5, 2007 · N75068 · Substantial damageNTSB CHI06CA131Accident · No injuriesData collectionFinal reportSchweizer 269C · Lees Summit, MOThe flight instructor's delay in taking remedial action which led to the hard landing during the practice autorotation. The misjudged glide path, the dual student restricting the throttle control, and the trees were factors in the accident.May 12, 2006 · N7506L · Substantial damageNTSB MIA06CA013Accident · No injuriesData collectionFinal reportSchweizer 269C-1 · Titusville, FLThe pilot-in-command's improper flare during a practice autorotative landing, which resulted in a hard landing.Oct 29, 2005 · N1567C · Substantial damageNTSB DFW05CA168Accident · No injuriesData collectionFinal reportHughes 269C · Bruceville, TXThe flight instructor's improper flare during autorotation, which resulted in a hard landing. Contributing factor was, the lack of suitable terrain.Jun 23, 2005 · N7487F · Substantial damageNTSB DEN04CA092Accident · No injuriesData collectionFinal reportSchweizer 269C · Englewood, COthe settling with power situation encountered by the pilot. Contributing to the accident was the high density altitude.Jun 13, 2004 · N2062N · Substantial damageNTSB NYC04LA051Accident · Serious injuriesLimited investigationFinal reportSchweizer 269C-1 · Byron, NYThe pilot's improper use of the collective, and failure to maintain main rotor rpm, which resulted in low main rotor rpm and a hard landing.Dec 27, 2003 · N358SS · Substantial damageNTSB ATL02LA141Accident · No injuriesLimited investigationFinal reportHughes HU-269-A · Hamilton, ALThe pilot's improper use of flight controls that resulted in an improper flare and a hard landing during a practice autorotation. A factor was the loss of rotor rpm.Jul 12, 2002 · N911LH · Substantial damageNTSB LAX01LA053Accident · No injuriesLimited investigationFinal reportHughes 269C · Carlsbad, CAThe CFI's inadequate supervision and failure to maintain control of the helicopter during a practice autorotation. A contributing factor was the student's improper in-flight planning/decision.Dec 4, 2000 · N1097N · Substantial damageNTSB LAX00TA355Accident · No injuriesFinal reportHughes TH-55A · Phoenix, AZthe flight instructor's misjudged flare during a simulated autorotation, which led to a hard landing.Sep 29, 2000 · N331SD · Substantial damageNTSB LAX00LA181Accident · Minor injuriesLimited investigationFinal reportHughes 269C · Rialto, CAThe student's misjudged altitude and failure to maintain rotor rpm while practicing an autorotation, and, the instructor's delayed remedial corrective action and inadequate supervision of the flight.May 1, 2000 · N5395S · Substantial damageNTSB NYC99LA217Accident · No injuriesLimited investigationFinal reportHughes 269C · Utica, NYThe pilot's failure to maintain control of the helicopter while maneuvering, which resulted in a hard landing. A factor in this accident was the pilot's lack of total experience in helicopters.Sep 1, 1999 · N58397 · Substantial damageNTSB FTW98LA279Accident · No injuriesLimited investigationFinal reportSchweizer 269C · San Angelo, TXThe improper touchdown executed by the flight instructor, which resulted in the tail rotor impacting the ground.May 20, 1998 · N41TH · Substantial damageNTSB CHI98LA166Accident · No injuriesLimited investigationFinal reportEnstrom F28 · West Chicago, ILthe student pilot attempting a tailwind landing and improper compensation for the wind resulting in too high of a sink rate and the hard landing.May 14, 1998 · N86238 · Substantial damageNTSB ANC98LA037Accident · Minor injuriesLimited investigationFinal reportEnstrom F-28F · Haines, AKThe pilot flaring too low during an improper practice autorotation.Apr 12, 1998 · N199LB · Substantial damageNTSB MIA98LA127Accident · No injuriesLimited investigationFinal reportSchweizer 269-C · Ormond Beach, FLThe CFI's inadequate supervision and poor communication which led the rated student pilot to roll the throttle off, and the CFI's subsequent failure to apply forward cyclic to increase airspeed which resulted in the subsequent hard landing and roll over.Apr 8, 1998 · N7509E · Substantial damageNTSB CHI97LA118Accident · No injuriesLimited investigationFinal reportHughes 269A · Council Bluffs, IAfailure of the student pilot to maintain directional control, inadequate supervision by the flight instructor (CFI), and subsequent failure of the pilot(s) to properly flare the helicopter during a hover autorotation.Apr 27, 1997 · N1040S · Substantial damageNTSB LAX95LA188Accident · No injuriesLimited investigationFinal reportSchweizer 269C · Scottsdale, AZThe CFI's failure to apply adequate power during the flare which was a result of not maintaining the required engine and rotor rpm.May 12, 1995 · N6120A · Substantial damageNTSB CHI94LA316Accident · No injuriesLimited investigationFinal reportSchweizer 269C · Grand Forks, NDthe pilot-in-command's (CFI) delayed recovery from a practice autorotation. A factor associated with the accident was the student pilot's improper autorotation.Sep 7, 1994 · N61245 · Substantial damageNTSB CHI94LA138Accident · Minor injuriesLimited investigationFinal reportSchweizer 269C · Fargo, NDthe pilot in command's improper autorotation technique. A factor associated with the accident is the FAA Inspector's delayed remedial action.Apr 21, 1994 · N3623Y · Substantial damageNTSB LAX92LA383Accident · No injuriesLimited investigationFinal reportHughes 269C · Rialto, CAThe pilot/passenger's failure to maintain adequate rotor RPM and the pilot-in-command's inadequate supervision of the flight.Sep 12, 1992 · N58164 · Substantial damageNTSB FTW91LA150Accident · No injuriesLimited investigationFinal reportHughes 269A-1 · No. Little Rock, ARThe pilot's failure to maintain main rotor RPM, his delayed flare, and the improper touchdown.Aug 18, 1991 · N65372 · Substantial damageNTSB LAX89LA309Accident · No injuriesLimited investigationFinal reportHughes 269C · Mesa, AZImproper flare by the student pilot, and improper supervision by the instructor pilot (CFI).Mar 30, 1989 · N58164 · Substantial damageNTSB NYC88LA226Accident · Minor injuriesLimited investigationFinal reportHughes 269A · Pittstown, NJThe CFI was demonstrating a departure autorotation to a prospective student. A high rate of descent with low airspeed and low rotor RPM developed and the CFI attempted a power recovery with no results. The acft touched down hard, the skids collapsed and the…Aug 21, 1988 · N7028V · Substantial damageNTSB LAX87LA339Accident · Minor injuriesLimited investigationFinal reportHughes 269C · Freemont, CAThe purpose of the flt was to provide instruction to a foreign national, who held a U.S. Private helicopter rating. The instructor (CFI) rprtd that during a practice autorotation, he announced twice for the student to flare as the helicopter was passing thru…Sep 17, 1987 · N1101K · Substantial damage