# NTSB investigations: Hughes TH-55A

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

## Latest cases

- [NTSB CEN14LA537](https://openairdocs.org/ntsb/CEN14LA537.md): Hughes TH 55A · Hudson, WI · Accident · Minor injuries · Limited investigation · Final report · Jun 10, 2014 · N5335U · Substantial damage
  > The 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 ERA13CA283](https://openairdocs.org/ntsb/ERA13CA283.md): Hughes TH-55A · Morgantown, WV · Accident · No injuries · Data collection · Final report · Jun 12, 2013 · N7057H · Substantial damage
  > The pilot’s inadequate planning which resulted in an encounter with settling with power and descent into terrain during takeoff.
- [NTSB CHI04LA032](https://openairdocs.org/ntsb/CHI04LA032.md): Hughes TH-55A · West Lafayette, IN · Accident · Serious injuries · Limited investigation · Final report · Nov 18, 2003 · N9240D · Substantial damage
  > The 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 MIA98TA215](https://openairdocs.org/ntsb/MIA98TA215.md): Hughes TH-55A · Savannah, GA · Accident · No injuries · Final report · Jul 31, 1998 · N998MC · Destroyed
  > The 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 ATL94GA148](https://openairdocs.org/ntsb/ATL94GA148.md): Hughes TH-55A · Savannah, GA · Accident · Minor injuries · Final report · Jul 30, 1994 · N789MC · Substantial damage
  > The loss of engine power for undetermined reasons.
- [NTSB MIA94T#A03](https://openairdocs.org/ntsb/MIA94T%23A03.md): Hughes 269A · Aripeka, FL · Accident · No injuries · Class 3 · Final report · May 14, 1994 · N5002J · Substantial damage
- [NTSB ANC92LA144](https://openairdocs.org/ntsb/ANC92LA144.md): Hughes 269A · Nome, AK · Accident · Serious injuries · Limited investigation · Final report · Aug 24, 1992 · N5006M · Substantial damage
  > The pilot's failure to maintain an adequate altitude.
- [NTSB ATL90TL#04](https://openairdocs.org/ntsb/ATL90TL%2304.md): Hughes TH-55 · Brunswick, GA · Accident · No injuries · Class 3 · Final report · Jun 15, 1990 · N7057K · Substantial damage
- [NTSB FTW83LA008](https://openairdocs.org/ntsb/FTW83LA008.md): Hughes TH-55A · Balmorhea, TX · Accident · No injuries · Limited investigation · Final report · Oct 4, 1982 · N8045F · Substantial damage
  > A 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…

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```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."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
```

This list as a web page: https://openairdocs.org/ntsb?model=4471004

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