# NTSB investigations: Rotax 914UL, 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 CEN26LA152](https://openairdocs.org/ntsb/CEN26LA152.md): Ela ELA10 · Boulder, CO · Accident · No injuries · Class 4 · Limited · Final report · Mar 29, 2026 · N510EA · Substantial damage
  > The pilot’s failure to maintain directional control during the takeoff in gusting wind conditions.
- [NTSB CEN26LA067](https://openairdocs.org/ntsb/CEN26LA067.md): Mark O Treidel American Ranger AR-1 · Denver, CO · Accident · No injuries · Class 4 · Limited · Final report · Dec 16, 2025 · N529MW · Substantial damage
  > The pilot’s failure to attain rotor RPM and maintain proper rotor disc angle during takeoff which resulted in a rotor strike with the rudder.
- [NTSB CEN23LA397](https://openairdocs.org/ntsb/CEN23LA397.md): Titanium Auto Gyro Titanium Explorer · Falcon, CO · Accident · Serious injuries · Class 4 · Limited · Final report · Sep 4, 2023 · N467TE · Substantial damage
  > The pilot’s failure to establish a proper airspeed before becoming airborne, which resulted in an inability to climb out of ground effect and subsequent hard landing. Contributing to the accident was high-density altitude.

## 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.engine_model_code IN ('55553'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=55553&state=CO

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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.