# N4686S: 2012 Jim Faist CALIDUS

- Status: Valid registration
- Airframe: [Jim Faist CALIDUS](https://openairdocs.org/model/jim-faist-calidus) (registry code 05631TK, 2 seats)
- Engine: [Rotax 912ULS series](https://openairdocs.org/engine/rotax-912uls-series) (registry code 55572)
- Serial number: 11023
- Year built: 2012
- Type: Rotorcraft
- Engine type: Reciprocating
- Kit: Autogyro USA LLC CALIDUS
- Airworthiness: Experimental, amateur built
- Airworthiness date: May 30, 2012
- Certificate issued: April 25, 2023
- Expires: April 30, 2030
- Mode S code: A5BA8E
- Registered owner: [Tjepkema Charles S](https://openairdocs.org/faa-owner/TJEPKEMA%20CHARLES%20S)
- Location: [Dorr, MI](https://openairdocs.org/faa-place/MI/Dorr)
- Owner type: Individual
- Owner's area on the map: 42.7285° N, 85.7906° W: Placed by OpenAirDocs at the center of ZIP code 49323, 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=4686S
- Page: https://openairdocs.org/aircraft/N4686S

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 912ULS model are included.

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

### Matched by airframe (Jim Faist CALIDUS)

None in force.

### Matched by engine (Rotax 912ULS series)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N4686S.

## FAA accident and incident reports

None matched to N4686S.

## 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 N4686S

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N4686S before.

- [Cancelled 1995-07-27](https://openairdocs.org/deregistered/N4686S-1995-07-27): Cessna TR182, S/N R18201379. Exported to Germany. Owner: [Xxx, OK](https://openairdocs.org/faa-place/OK/Xxx)
- [Cancelled 1967-12-07](https://openairdocs.org/deregistered/N4686S-1967-12-07): Bensen B-8M, S/N 409. Owner: [Norris Elbert R](https://openairdocs.org/faa-owner/NORRIS%20ELBERT%20R), [Wilmington, NC](https://openairdocs.org/faa-place/NC/Wilmington)

## Related

- Other Jim Faist CALIDUS aircraft: https://openairdocs.org/model/jim-faist-calidus/aircraft.md
- The Rotax 912ULS series engine: https://openairdocs.org/engine/rotax-912uls-series.md

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