NTSB investigations: Hughes 369HS

4 cases on aircraft the registry lists as Hughes 369HS, where the first occurrence was “Loss of engine power(partial) - mech failure/malf”. 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

19842026
NTSB investigations: Hughes 369HS per year, 1984–2026: 4 cases
19841
19861
19931
19971

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.aircraft_model_code IN ('4470728')
      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\" = 352))
  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 LAX98LA053Accident · Minor injuriesLimited investigationFinal reportMcDonnell Douglas 369HS · Saipan, IndiaThe failure of the maintenance facility to comply with the service bulletins, which resulted in the development of a corrosion pit, subsequent leakage and failure of the acceleration bellows of the fuel control.Dec 6, 1997 · N9068F · DestroyedNTSB MIA93LA143Accident · Minor injuriesLimited investigationFinal reportHughes 369HS · Orlando, FLUnsuitable terrain encountered during the autorotative forced landing. Contributing to the accident was total loss of engine power due to seizure of the compressor impeller following failure of the no.2 bearing for undetermined reasons.Jun 15, 1993 · N500RT · Substantial damageNTSB MIA87FA046Accident · 2 fatalField investigationFinal reportHughes 369HS · Zephyrhills, FLA witness stated that she heard the eng on the helicopter quit. She looked out her window and watched the helicopter hit the ground, bounce, hit again, flip over and the tail broke off. The helicopter then burst into flames and exploded. Exam of the eng…Dec 9, 1986 · N8390F · DestroyedNTSB LAX84LA163Accident · Serious injuriesLimited investigationFinal reportHughes 500C (369HS) · San Diego, CAThe plt reported a partial power loss. During the forced landing tahe right skid collapsed & the t/r severed the tail boom. During a subsequent eng test, the eng would produce no more than 20 PSI torque at 100% N2. The fuel control & fuel nozzle were found to…Feb 5, 1984 · N8319F · Substantial damage