NTSB investigations: Hughes 269C
9 cases on aircraft the registry lists as Hughes 269C, where the first occurrence was “Loss of engine power(total) - 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
| 1985 | 2 |
|---|---|
| 1988 | 1 |
| 1989 | 3 |
| 1990 | 1 |
| 1995 | 1 |
| 1996 | 1 |
Where
Open the mapLatest 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 ('4470504')
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\" = 351))
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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('4470504')
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" = 351))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESCRun 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 SEA96FA130Accident · 1 fatalField investigationFinal reportHughes 269C · Eldon, WAfatigue failure of the connecting rod cap, which resulted in loss of engine power and ditching at sea.NTSB FTW95GA090Accident · No injuriesFinal reportHughes 269C · Dumont, TXThe loss of engine power due to overstress fractures of the #3 cylinder connecting rod cap bolts. The origin of the fractures could not be determined.NTSB BFO91LA014Accident · No injuriesLimited investigationFinal reportHughes 269C · Louisville, KYFatigue failure of the number 1 cylinder connecting rod.NTSB MKC89LA200Accident · No injuriesLimited investigationFinal reportHughes 269C · Bloomington, MNFailure of the engine crankshaft. The light conditions at dawn and the vehicles were considered to be contributing factors.NTSB LAX89LA246Accident · Serious injuriesLimited investigationFinal reportHughes 269C · Kalapana, HIThe loss of engine power due to the failure of the engine exhaust valve in the no. 2 cylinder and the disregard of the Lycoming service bulletin by company maintenance personnel. Contributing to the accident was the high vegetation and trees located at the…NTSB CHI89FA062Accident · Serious injuriesField investigationFinal reportHughes 269C · De Kalb, ILFatigue failure of the number four connecting rod which resulted in an engine failure. Factors in the accident were the broken ring in the number one piston and a deteriorated center main bearing.NTSB ATL89FA035Accident · 2 fatalField investigationFinal reportHughes 269C · Mohawk, TNThe helicopter had landed at a private airstrip and the instructor deplaned. The dual student remained in the helicopter with the engine running. The CFI reboarded and the student made the takeoff. Later, on downwind in traffic pattern, a witness reported a…NTSB SEA86LA026Accident · No injuriesLimited investigationFinal reportHughes 269C · Brooks, ORA total loss of power occurred due to the number 4 cylinder failing. A tail boom strike occurred during a hard landing in a parking lot, severing the tail boom.NTSB MKC85LA115Accident · No injuriesLimited investigationFinal reportHughes 269C · West Liberty, IAOn a downwind swath run the helicopter experienced an eng failure and the plt entered an autorotation. The plt then made a hard landing which resulted in substantial damage. Inspection of the engine revealed that the nut which retains the gear to crankshaft…