# N121ML: 2026 Michael E King RANS S-21 OUTBOUND

- Status: Valid registration
- Airframe: [Michael E King RANS S-21 OUTBOUND](https://openairdocs.org/model/michael-e-king-rans-s-21-outbound) (registry code 05643H4, 2 seats)
- Engine: [Continental IOX340 series](https://openairdocs.org/engine/continental-iox340-series) (registry code 17490)
- Serial number: 08250436
- Year built: 2026
- Type: Fixed wing single engine
- Engine type: 4 cycle
- Kit: Rans Designs Inc S-21 OUTBOUND
- Airworthiness: Experimental, amateur built
- Airworthiness date: January 26, 2026
- Certificate issued: October 27, 2025
- Expires: October 31, 2032
- Mode S code: A05887
- Registered owner: [King Michael E](https://openairdocs.org/faa-owner/KING%20MICHAEL%20E)
- Location: [Westfield, IN](https://openairdocs.org/faa-place/IN/Westfield)
- Owner type: Individual
- Owner's area on the map: 40.0361° N, 86.1737° W: Placed by OpenAirDocs at the center of ZIP code 46074, 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=121ML
- Page: https://openairdocs.org/aircraft/N121ML

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 Continental IOX340 model are included.

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

### Matched by airframe (Michael E King RANS S-21 OUTBOUND)

None in force.

### Matched by engine (Continental IOX340 series)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N121ML.

## FAA accident and incident reports

None matched to N121ML.

## 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.

## Earlier aircraft with N121ML

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N121ML before.

- [Cancelled 2016-04-15](https://openairdocs.org/deregistered/N121ML-2016-04-15): Rockwell International 690B, S/N 11526. Exported to Western Samoa. Owner: [Hunter Jeffrey](https://openairdocs.org/faa-owner/HUNTER%20JEFFREY), Apia

## Related

- Other Michael E King RANS S-21 OUTBOUND aircraft: https://openairdocs.org/model/michael-e-king-rans-s-21-outbound/aircraft.md
- The Continental IOX340 series engine: https://openairdocs.org/engine/continental-iox340-series.md

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