# N25SU: 1991 Sukhoi SU-26MX

- Status: Valid registration
- Airframe: [Sukhoi SU-26MX](https://openairdocs.org/model/sukhoi-su-26mx) (registry code 9850102, 1 seats)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Serial number: 5204
- Year built: 1991
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, exhibition
- Airworthiness date: January 11, 1999
- Certificate issued: August 6, 2019
- Expires: August 31, 2029
- Mode S code: A256C8
- Registered owner: [Rosendahl Gregory C](https://openairdocs.org/faa-owner/ROSENDAHL%20GREGORY%20C)
- Location: [Boulder, CO](https://openairdocs.org/faa-place/CO/Boulder)
- Owner type: Individual
- Owner's area on the map: 40.0447° N, 105.2884° W: Placed by OpenAirDocs at the center of ZIP code 80304, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=25SU
- Page: https://openairdocs.org/aircraft/N25SU

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination.

## ADs that may apply (OpenAirDocs): 0 in force

### Matched by airframe (Sukhoi SU-26MX)

None in force.

### Matched by engine (Amateur-built UNKNOWN ENG)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB CEN25LA405](https://openairdocs.org/ntsb/CEN25LA405), Sep 30, 2025: Sukhoi SU-26MX (N25SU), Longmont, CO, substantial damage. Probable cause: The pilot's failure to maintain directional control during takeoff.

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 20250930016839A](https://openairdocs.org/incident/20250930016839A), Sep 30, 2025: Sukhoi SU-26MX (N25SU), Longmont, CO, Substantial damage. Takeoff on runway 11. Loss of control occurred early in the takeoff roll , the aircraft veered left and departed the runway. It became airborne for 4 seconds…

## Service difficulty reports

None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

## STCs that may be installed (OpenAirDocs)

None matched to this aircraft's models.

## Related

- Other Sukhoi SU-26MX aircraft: https://openairdocs.org/model/sukhoi-su-26mx/aircraft.md
- The Amateur-built UNKNOWN ENG engine: https://openairdocs.org/engine/amateur-built-unknown-eng.md

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