# NTSB investigations: Enstrom F-28C, CO

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 DEN05LA068](https://openairdocs.org/ntsb/DEN05LA068.md): Enstrom F-28C · Morrison, CO · Accident · No injuries · Limited investigation · Final report · Apr 13, 2005 · N5690K · Substantial damage
  > the pilot's failure to maintain rotor RPM during the approach which resulted in a landing short of the helipad.
- [NTSB DEN03LA018](https://openairdocs.org/ntsb/DEN03LA018.md): Enstrom F-28C · Morrison, CO · Accident · Minor injuries · Limited investigation · Final report · Nov 23, 2002 · N552CS · Substantial damage
  > the pilot not maintaining clearance from the telephone lines during landing. Factors contributing to the accident were the pilot not being able to see the telephone lines, the low altitude, and the dark night.
- [NTSB DEN01LA106](https://openairdocs.org/ntsb/DEN01LA106.md): Enstrom F-28C · Elizabeth, CO · Accident · No injuries · Limited investigation · Final report · May 30, 2001 · N83GT · Substantial damage
  > the loss of engine power during approach for an undetermined reason. A contributing factor was the high density altitude.
- [NTSB FTW98LA129](https://openairdocs.org/ntsb/FTW98LA129.md): Enstrom F-28C-2 · Broomfield, CO · Accident · No injuries · Limited investigation · Final report · Feb 15, 1998 · N5693M · Substantial damage
  > water contamination in the fuel, which resulted in loss of engine power and a forced (autorotative) landing. Factors relating to the accident were: darkness; and a high obstruction in the emergency landing area.
- [NTSB DEN93LA070](https://openairdocs.org/ntsb/DEN93LA070.md): Enstrom F-28C · Boulder, CO · Accident · No injuries · Limited investigation · Final report · Jun 27, 1993 · N625H · Substantial damage
  > A failure by the pilot flying to adequately compensate for wind conditions which led to a loss of tail rotor control. A factor was: inadequate supervision by the pilot in command.
- [NTSB DEN92LA001](https://openairdocs.org/ntsb/DEN92LA001.md): Enstrom F-28C · Evergreen, CO · Accident · No injuries · Limited investigation · Final report · Oct 2, 1991 · N552H · Substantial damage
  > In flight encounter with a sudden downdraft. A factor was: the pilot's lack of total experience in aircraft type.

## 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."eventStateOrRegion" = 'CO' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('3300407'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=3300407&state=CO

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