NTSB investigations: Lycoming HIO-360 series, FL

5 cases on aircraft whose registry engine model is Lycoming HIO-360 series, 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

19852026
NTSB investigations: Lycoming HIO-360 series, FL per year, 1985–2026: 5 cases
19851
19871
19891
19971
19991

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.\"eventStateOrRegion\" = 'FL' 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')
      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.

NTSB MIA00GA057Accident · Serious injuriesFinal reportHughes OH-6A · Fort Myers, FLimproper maintenance inspection of the helicopter by unknown maintenance personnel, resulting in a worn control rod bearing being continued in service, and subsequent separation, resulting in an in-flight loss of control and a crash.Dec 20, 1999 · N72LC · Substantial damageNTSB MIA97LA084Accident · No injuriesLimited investigationFinal reportHughes 269A · Homosassa, FLthe unqualified person's poor judgment, by taking the helicopter without the owner's permission and attempting an unauthorized flight at night; and his failure (or inability) to maintain control the helicopter. Darkness was a related factor.Feb 7, 1997 · N9061R · Substantial damageNTSB MIA89LA231Accident · Minor injuriesLimited investigationFinal reportHughes 269A · Jacksonville, FLInadequate visual look-out by the pilot and his failure to maintain control of the helicopter, while maneuvering to avoid obstructions. The transmission lines were considered to be factors.Aug 25, 1989 · N9014N · Substantial damageNTSB MIA87LA089Accident · No injuriesLimited investigationFinal reportHughes 269A · Jacksonville, FLThe instructor plt was demonstrating a hovering autorotation landing with forward movement, when, after the throttle was closed, the helicopter hung in the air. Forward cyclic was then applied when he realized that the rotor RPM began to deteriorate. The…Feb 20, 1987 · N90270 · Substantial damageNTSB MIA85LA133Accident · No injuriesLimited investigationFinal reportHughes 269C · Tampa, FLThe instructor plt (CFI) reported that while practicing a taxi/hover autorotation, the helicopter settled onto a soft area in the turf. He reported that the student over-controlled with right anti-torque pedal & the helicopter settled in a left skid. The CFI…Mar 26, 1985 · N58208 · Substantial damage