# N251RK: 2011 Knowles James R SONEX

- Status: Valid registration
- Airframe: [Knowles James R SONEX](https://openairdocs.org/model/knowles-james-r-sonex) (registry code 05629L1, 2 seats)
- Engine: [Aeroconver AEROVEE](https://openairdocs.org/engine/aeroconver-aerovee) (registry code 01401)
- Serial number: 1071
- Year built: 2011
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Kit: Sonex Aircraft LLC SONEX
- Airworthiness: Experimental, amateur built
- Airworthiness date: July 16, 2011
- Certificate issued: January 11, 2022
- Expires: January 31, 2029
- Mode S code: A25CB6
- Registered owner: [End Edward G](https://openairdocs.org/faa-owner/END%20EDWARD%20G)
- Location: [Indianapolis, IN](https://openairdocs.org/faa-place/IN/Indianapolis)
- Owner type: Individual
- Owner's area on the map: 39.7215° N, 85.9990° W: Placed by OpenAirDocs at the center of ZIP code 46239, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=251RK
- Page: https://openairdocs.org/aircraft/N251RK

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 (Knowles James R SONEX)

None in force.

### Matched by engine (Aeroconver AEROVEE)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N251RK.

## FAA accident and incident reports

None matched to N251RK.

## 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 Knowles James R SONEX aircraft: https://openairdocs.org/model/knowles-james-r-sonex/aircraft.md
- The Aeroconver AEROVEE engine: https://openairdocs.org/engine/aeroconver-aerovee.md

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