Trendak Tercel accident near Odorheiul Secuiesc City, Ro, September 26, 2015
On September 26, 2015, a Trendak Tercel (gyroplane), registered A11DUN, was substantially damaged in an accident during takeoff near Odorheiul Secuiesc City. 1 person was killed.
The NTSB's probable cause their words, unchanged
The NTSB has not yet published a probable cause for this accident. Investigations usually take one to two years; this page updates when the final report is released.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- September 26, 2015
- Place
- Odorheiul Secuiesc City, Romania · map
- Type
- Accident
- Injuries
- 1 person was killed.
- Weather
- not recorded
- Aircraft
- Trendak Tercel
- Registration
- A11DUN · no longer on the register
- Damage
- Substantial damage
- Flight
- Flight
The NTSB's narrative preliminary · quoted from the NTSB record
This is preliminary information, subject to change, and may contain errors. On September 26, 2015, at an unknown time, a Trendak Tercel gyroplane, A11-DUN, impacted terrain after takeoff from an airfield near Odorheiul Secuiesc city, Harghita County, Romania. The pilot, the sole occupant on board, was fatally injured. This investigation is under the jurisdiction and control of the Civil Aviation Safety Investigation and Analysis Center (CIAS) of Romania. Under the provisions of Annex 13 of the Convention on International Civil Aviation as a State of Design, the United States has designated an accredited representative to participate in the investigation. Any further information may be obtained from: CIAS Sos. Bucuresti-Ploiesti highway 40 Sector 1 Bucharest – 013 695 Telephone: +4 021 222 05 35 Facsimile: +4 0378 107 106 E-mail: info@cias.gov.ro Investigator-in-Charge Mr. Eugen SUCIU Telephone: +40 21 222 05 35 E-mail: eugen.suciu@cias.gov.ro This report is for informational purposes only and contains only information released by, or obtained from, the CIAS of Romania.
The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.
The factual record from the NTSB's investigation tables, in plain English
What happened, in order
- Flight control sys malf/fail during takeoff defining event
The aircraft
- Landing gear: fixed
- Not recorded
Weather at the time
- Temperature: 0°F (-18°C), dew point 0°F (-18°C)
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flight crew | 1 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), has not been read from the NTSB for this case yet; the list appears here once it has. Open the docket at the NTSB.
Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.