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NTSB investigations: Lycoming HIO-360 series, PA

13 cases on aircraft whose registry engine model is Lycoming HIO-360 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.

Defining event

Finding

Phase of flight

Aircraft model

Cases per year

19732026

Where

Latest cases

Query with SQL

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" = 'PA' AND c."eventCountry" = 'USA' AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41524')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC

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\" = 'PA' AND c.\"eventCountry\" = 'USA'
    AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41524'))
  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" = 'PA' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41524'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC

Run 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 ERA26LA122Accident · Minor injuriesClass 4 · LimitedFinal reportHughes 269A · Gettysburg, PAThe flight instructor’s failure to identify the excess power required to lift off from soft and muddy ground, which resulted in a loss of control and subsequent collision with a hangar during takeoff.Feb 21, 2026 · N1020S · Substantial damage NTSB ERA22LA210Accident · No injuriesClass 4 · LimitedFinal reportHenderson Clifford S Super Bear CSH-1 · Indiana, PAThe pilot's loss of directional control while landing, which resulted in a ground loop.Apr 5, 2022 · N371M · Substantial damage NTSB ERA21LA357Accident · No injuriesClass 4 · LimitedFinal reportEnstrom F28 · Toughkenamon, PAThe pilot’s failure to maintain control of the helicopter during an out-of-ground effect hover in a gusty wind, due to loss of tail rotor effectiveness.Sep 8, 2021 · N51789 · Substantial damage NTSB GAA19CA514Accident · No injuriesData collectionFinal reportHughes 269A · Shamokin, PAThe pilot's improper landing flare during an autorotation, which resulted in a hard landing. Contributing to the accident was a loss of engine power for reasons that could not be determined because postaccident examination revealed no evidence of any…Aug 25, 2019 · N653CH · Substantial damage NTSB ERA13LA433Accident · 1 fatalLimited investigationFinal reportEnstrom F-28C · Bloomsburg, PAThe relieved pilot’s failure to maintain clearance from the rotating main rotor blades after he exited the helicopter.Sep 27, 2013 · N631DP · Minor damage NTSB ERA12CA357Accident · No injuriesData collectionFinal reportHughes TH-55 · Pittsfield, PAThe student pilot's failure to maintain helicopter control during an encounter with loss of tail rotor effectiveness.May 19, 2012 · N74914 · Substantial damage NTSB NYC06CA008Accident · No injuriesData collectionFinal reportEnstrom F-28C · Smoketown, PAThe student pilot's failure to maintain aircraft control while performing pedal turns at a hover, resulting in a collision with terrain.Oct 11, 2005 · N51772 · Substantial damage NTSB IAD04LA013Accident · No injuriesLimited investigationFinal reportSchweizer 269C · Media, PAA lack of previous lubrication to the tail rotor drive shaft forward fitting teeth, which resulted in their gradual wear, the eventual slippage of the shaft, and the subsequent loss of tailrotor thrust and forced landing.Feb 28, 2004 · N75070 · Substantial damage NTSB NYC98FA018Accident · No injuriesField investigationFinal reportEnstrom F-28C · Fairview, PAinadequate maintenance, which led to detonation and a melted piston, and subsequent power loss.Oct 24, 1997 · N1944J · Substantial damage NTSB NYC83LA206Accident · No injuriesLimited investigationFinal reportHughes 269C · Spring House, PAThe helicopter rolled over during a practice demonstration autorotation landing. The CFI was at the controls with the student following through. According to the instructor the student overrode the controls just prior to touchdown with too much cyclic. The…Aug 10, 1983 · N1093Y · Substantial damage NTSB NYC79FGM40Accident · No injuriesClosedHughes 300C · Barnesboro, PAJul 30, 1979 · N8641F · Destroyed NTSB NYC78FA088Accident · No injuriesClosedHughes 269C · Derry, PASep 4, 1978 · N7466F · Substantial damage NTSB NYC73AN134Accident · No injuriesClosedEnstrom F-28A · Philadelphia, PAApr 17, 1973 · N9562 · Substantial damage