# Fatal NTSB investigations: Lycoming HI0-360 series

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 WPR20LA191](https://openairdocs.org/ntsb/WPR20LA191.md): Enstrom 280 · Hayden, ID · Accident · 1 fatal · Class 3 · Limited · Final report · Jun 24, 2020 · N280MM · Destroyed
  > The total loss of power while maneuvering at low altitude due to the detonation of two engine cylinders and damaged spark plugs.
- [NTSB CEN15FA126](https://openairdocs.org/ntsb/CEN15FA126.md): Enstrom 280FX · Erie, CO · Accident · 2 fatal · Field investigation · Final report · Jan 26, 2015 · N86235 · Destroyed
  > An in-flight failure of the helicopter's #2 main rotor spindle due to undetected fatigue cracking, which resulted in an in-flight breakup. Contributing to failure were the nonconforming thread root radius of the spindle and the manufacturer's failure to…
- [NTSB MIA02FA026](https://openairdocs.org/ntsb/MIA02FA026.md): Enstrom 280FX · Tallassee, AL · Accident · 2 fatal · Field investigation · Final report · Nov 22, 2001 · N280XF · Destroyed
  > The failure of the pilot to maintain a safe altitude above terrain and maintain a visual lookout resulting in the helicopter colliding with power transmission lines and crashing into a river. A factor in the accident was the power transmission lines not being…
- [NTSB NYC96FA003](https://openairdocs.org/ntsb/NYC96FA003.md): Enstrom 280C · Quakertown, PA · Accident · 2 fatal · Field investigation · Final report · Oct 6, 1995 · N976BT · Destroyed
  > improper installation of the magneto by maintenance personnel, which resulted in the loss of ignition and the loss of engine power. A factor relating to the accident was: the lack of suitable terrain for an emergency landing.
- [NTSB NYC87LA012](https://openairdocs.org/ntsb/NYC87LA012.md): Enstrom 280C · Newport, RI · Accident · 1 fatal · Limited investigation · Final report · Dec 11, 1986 · N647H · Substantial damage
  > Aircraft descended and collided with water when the pilot attempted to regain visual ground reference when weather deteriorated. No plt acc report was received. Plt time was not reported or available.
- [NTSB NYC85FA015](https://openairdocs.org/ntsb/NYC85FA015.md): Enstrom 280C · Butler, PA · Accident · 2 fatal · Field investigation · Final report · Oct 28, 1984 · N51686 · Destroyed
  > The helicopter struck the static line of a high voltage transmission line while on a flt to photograph an apartment complex. The owner of the complex accompanied the plt on the flt, there after the acft was to be used for passenger sightseeing flts as part of…
- [NTSB SEA84FA063](https://openairdocs.org/ntsb/SEA84FA063.md): Enstrom 280C · Middleton, ID · Accident · 2 fatal · Field investigation · Final report · Feb 29, 1984 · N51715 · Destroyed
  > The acft collided with the terrain during a test flt. Witnesses observed the acft rotate about 180 degrees about its vertical axis go nose low and descend vertically to the ground. A noise change described as a 'sputter' or tone change' was heard during this…

## 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."highestInjuryLevel" = 'Fatal'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41553'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41553&fatal=1

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OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.