# N140MR: Riley Mike CHALLENGER II LSS

- Status: Valid registration
- Airframe: [Riley Mike CHALLENGER II LSS](https://openairdocs.org/model/riley-mike-challenger-ii-lss) (registry code 056298E, 2 seats)
- Engine: [Rotax 503 series](https://openairdocs.org/engine/rotax-503-series) (registry code 55564)
- Serial number: CH2 1209 LSS 0165
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Kit: Quad City Ultralight Acft Corp CHALLENGER II
- Airworthiness: Experimental, amateur built
- Airworthiness date: October 15, 2010
- Certificate issued: July 14, 2021
- Expires: July 31, 2028
- Mode S code: A0A3D3
- Registered owner: [Vandeberg Vern](https://openairdocs.org/faa-owner/VANDEBERG%20VERN)
- Location: [Osseo, WI](https://openairdocs.org/faa-place/WI/Osseo)
- Owner type: Individual
- Owner's area on the map: 44.5579° N, 91.2165° W: Placed by OpenAirDocs at the center of ZIP code 54758, within about 7 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=140MR
- Page: https://openairdocs.org/aircraft/N140MR

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 (Riley Mike CHALLENGER II LSS)

None in force.

### Matched by engine (Rotax 503 series)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N140MR.

## FAA accident and incident reports

None matched to N140MR.

## 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 Riley Mike CHALLENGER II LSS aircraft: https://openairdocs.org/model/riley-mike-challenger-ii-lss/aircraft.md
- The Rotax 503 series engine: https://openairdocs.org/engine/rotax-503-series.md

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