NTSB investigations: Hughes TH-55A
9 cases on aircraft the registry lists as Hughes TH-55A. 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
| 1982 | 1 |
|---|---|
| 1990 | 1 |
| 1992 | 1 |
| 1994 | 2 |
| 1998 | 1 |
| 2003 | 1 |
| 2013 | 1 |
| 2014 | 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 ('4471004'))
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 ('4471004'))
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 CEN14LA537Accident · Minor injuriesLimited investigationFinal reportHughes TH 55A · Hudson, WIThe nonhelicopter-rated pilot’s operation of the helicopter and its subsequent collision with trees during takeoff for reasons that could not be determined based on the available evidence.NTSB ERA13CA283Accident · No injuriesData collectionFinal reportHughes TH-55A · Morgantown, WVThe pilot’s inadequate planning which resulted in an encounter with settling with power and descent into terrain during takeoff.NTSB CHI04LA032Accident · Serious injuriesLimited investigationFinal reportHughes TH-55A · West Lafayette, INThe fractured cluster fitting resulting in a loss of directional control during initial climb and the improper repair of cluster fitting by unknown personnel. The night conditions were a contributing factor.NTSB MIA98TA215Accident · No injuriesFinal reportHughes TH-55A · Savannah, GAThe loss of engine power for an undetermined reason, resulting in a forced landing, and an in-flight collision with a ditch. A factor in this accident was a high density altitude.NTSB ATL94GA148Accident · Minor injuriesFinal reportHughes TH-55A · Savannah, GAThe loss of engine power for undetermined reasons.NTSB MIA94T#A03Accident · No injuriesClass 3Final reportHughes 269A · Aripeka, FLNTSB ANC92LA144Accident · Serious injuriesLimited investigationFinal reportHughes 269A · Nome, AKThe pilot's failure to maintain an adequate altitude.NTSB ATL90TL#04Accident · No injuriesClass 3Final reportHughes TH-55 · Brunswick, GANTSB FTW83LA008Accident · No injuriesLimited investigationFinal reportHughes TH-55A · Balmorhea, TXA Hughes helicopter was damaged when it lost power during takeoff and was crashed into a tree to prevent it from rolling down a hill. The weather was VMC and no flight plan was filed. The pilot said the manifold pressure decayed FROM22 inches to 18 inches and…