# N679KS: 2020 Marshall Keith K RANS S-21

- Status: Valid registration
- Airframe: [Marshall Keith K RANS S-21](https://openairdocs.org/model/marshall-keith-k-rans-s-21) (registry code 05639PP, 2 seats)
- Engine: [Titan IOX-340 SERIE](https://openairdocs.org/engine/titan-iox-340-serie) (registry code 59688)
- Serial number: 06180008
- Year built: 2020
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Kit: Rans Designs Inc S-21 OUTBOUND
- Airworthiness: Experimental, amateur built
- Airworthiness date: January 9, 2021
- Certificate issued: January 29, 2026
- Expires: January 31, 2033
- Mode S code: A8FE19
- Registered owner: [Marshall Van Matthew](https://openairdocs.org/faa-owner/MARSHALL%20VAN%20MATTHEW)
- Location: [Brownwood, TX](https://openairdocs.org/faa-place/TX/Brownwood)
- Owner type: Individual
- Owner's area on the map: 31.7442° N, 99.0564° W: Placed by OpenAirDocs at the center of ZIP code 76801, within about 11 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=679KS
- Page: https://openairdocs.org/aircraft/N679KS

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 (Marshall Keith K RANS S-21)

None in force.

### Matched by engine (Titan IOX-340 SERIE)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N679KS.

## FAA accident and incident reports

None matched to N679KS.

## 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 Marshall Keith K RANS S-21 aircraft: https://openairdocs.org/model/marshall-keith-k-rans-s-21/aircraft.md
- The Titan IOX-340 SERIE engine: https://openairdocs.org/engine/titan-iox-340-serie.md

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