# N2580K: Smith Joseph C CHALLENGER II

- Status: Valid registration
- Airframe: [Smith Joseph C CHALLENGER II](https://openairdocs.org/model/smith-joseph-c-challenger-ii) (registry code 05901CX, 2 seats)
- Engine: [Rotax 503 series](https://openairdocs.org/engine/rotax-503-series) (registry code 55564)
- Serial number: CH20989Y0456
- Type: Fixed wing single engine
- Engine type: 2 cycle
- Airworthiness: Experimental, registered before 01/31/08
- Airworthiness date: May 13, 2006
- Certificate issued: July 28, 2025
- Expires: July 31, 2032
- Mode S code: A27798
- Registered owner: [Cassens Bret A](https://openairdocs.org/faa-owner/CASSENS%20BRET%20A)
- Location: [Sigourney, IA](https://openairdocs.org/faa-place/IA/Sigourney)
- Owner type: Individual
- Owner's area on the map: 41.3166° N, 92.1914° W: Placed by OpenAirDocs at the center of ZIP code 52591, within about 6 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=2580K
- Page: https://openairdocs.org/aircraft/N2580K

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. The registry lists only the engine series, so ADs for every Rotax 503 model are included.

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

### Matched by airframe (Smith Joseph C CHALLENGER II)

None in force.

### Matched by engine (Rotax 503 series)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N2580K.

## FAA accident and incident reports

None matched to N2580K.

## 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 Smith Joseph C CHALLENGER II aircraft: https://openairdocs.org/model/smith-joseph-c-challenger-ii/aircraft.md
- The Rotax 503 series engine: https://openairdocs.org/engine/rotax-503-series.md

---
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.