# N673BP: 2008 Riemer William V JR CHALLENGER II

- Status: Valid registration
- Airframe: [Riemer William V JR CHALLENGER II](https://openairdocs.org/model/riemer-william-v-jr-challenger-ii) (registry code 056196J, 2 seats)
- Engine: [Rotax 503ULDCDI](https://openairdocs.org/engine/rotax-503uldcdi) (registry code 55568)
- Serial number: CH2 0702 2237
- Year built: 2008
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Kit: Quad City Ultralight Acft Corp CHALLENGER II
- Airworthiness: Experimental, amateur built
- Airworthiness date: November 14, 2008
- Certificate issued: August 15, 2005
- Expires: February 29, 2028
- Mode S code: A8E704
- Registered owner: [Riemer William V Jr](https://openairdocs.org/faa-owner/RIEMER%20WILLIAM%20V%20JR)
- Location: [Ogdensburg, WI](https://openairdocs.org/faa-place/WI/Ogdensburg)
- Owner type: Individual
- Owner's area on the map: 44.4862° N, 89.0310° W: Placed by OpenAirDocs at the center of ZIP code 54962, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=673BP
- Page: https://openairdocs.org/aircraft/N673BP

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 (Riemer William V JR CHALLENGER II)

None in force.

### Matched by engine (Rotax 503ULDCDI)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N673BP.

## FAA accident and incident reports

None matched to N673BP.

## 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 Riemer William V JR CHALLENGER II aircraft: https://openairdocs.org/model/riemer-william-v-jr-challenger-ii/aircraft.md
- The Rotax 503ULDCDI engine: https://openairdocs.org/engine/rotax-503uldcdi.md

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