# NTSB investigations: Enstrom Helicopter 280C: Loss of engine power

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 CHI00LA002](https://openairdocs.org/ntsb/CHI00LA002.md): Enstrom EN-28 · Indianapolis, IN · Accident · Minor injuries · Limited investigation · Final report · Oct 2, 1999 · N602H · Substantial damage
  > The pilot's attempted operation of the helicopter with known deficiencies, and his improper autorotation to landing. Factors were one fouled spark plug and another partially failed spark plug in the same cylinder, and the construction area.
- [NTSB DEN99LA173](https://openairdocs.org/ntsb/DEN99LA173.md): Enstrom 280C · Longmont, CO · Accident · No injuries · Limited investigation · Final report · Sep 30, 1999 · N84DH · Substantial damage
  > An inaccurate touchdown during a full autorotation, which resulted in main rotor flex which cut off the tail boom. Factors were the pilot's lack of total experience in helicopters and high density altitude.
- [NTSB FTW96LA291](https://openairdocs.org/ntsb/FTW96LA291.md): Enstrom 280C · Castle Rock, CO · Accident · No injuries · Limited investigation · Final report · Jul 3, 1996 · N51763 · Substantial damage
  > Total failure of the magneto. A factor was the pilot operating the helicopter with a known deficiency.
- [NTSB NYC86LA128](https://openairdocs.org/ntsb/NYC86LA128.md): Enstrom F-28C · Ephrata, PA · Accident · No injuries · Limited investigation · Final report · May 14, 1986 · N100WZ · Substantial damage
  > The Enstrom F28C was cruising enroute when it experienced a loss of power for reasons unknown. During the landing, in a large open field, the main rotor was damaged and the tail rotor separated from the tail boom. The lone occupant, the pilot, was uninjured…
- [NTSB NYC85LA143](https://openairdocs.org/ntsb/NYC85LA143.md): Enstrom 280C · S.Woodstock, VT · Accident · No injuries · Limited investigation · Final report · Jun 9, 1985 · N5694Y · Substantial damage
  > The helicopter experienced a loss of RPM on liftoff and received substantial damage when it collided with a chain link fence. The plt stated that on liftoff to aprx 50 ft AGL, the RPM dropped off to 2800 and a loss of climb resulted. The plt descended in an…
- [NTSB CHI83LA436](https://openairdocs.org/ntsb/CHI83LA436.md): Enstrom 280C · Pontiac, MI · Accident · Serious injuries · Limited investigation · Final report · Sep 21, 1983 · N5692L · Substantial damage
  > While returning from a traffic reporting flt, the plt elected to practice an autorotation. He stated that while he was in the process, the eng failed. He reported that he had initiated standard autorotation procedures, but impacted hard during the landing.…

## 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 ('3300505')
    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" = 350))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=3300505&occurrence=350

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