# N390TF: 2020 N390tf RANS S-21

- Status: Valid registration
- Airframe: [N390tf RANS S-21](https://openairdocs.org/model/n390tf-rans-s-21) (registry code 05639AW, 2 seats)
- Engine: [Continental IOX340 series](https://openairdocs.org/engine/continental-iox340-series) (registry code 17490)
- Serial number: 07190055
- Year built: 2020
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Kit: Rans Designs Inc S-21 OUTBOUND
- Airworthiness: Experimental, amateur built
- Airworthiness date: July 21, 2020
- Certificate issued: July 29, 2021
- Expires: July 31, 2028
- Mode S code: A48478
- Registered owner: [Back Country Investments LLC](https://openairdocs.org/faa-owner/BACK%20COUNTRY%20INVESTMENTS%20LLC)
- Location: [Missoula, MT](https://openairdocs.org/faa-place/MT/Missoula)
- Owner type: LLC
- Owner's area on the map: 46.8721° N, 113.9940° W: Placed by OpenAirDocs: center of Missoula, MT, 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=390TF
- Page: https://openairdocs.org/aircraft/N390TF

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 (N390tf RANS S-21)

None in force.

### Matched by engine (Continental IOX340 series)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N390TF.

## FAA accident and incident reports

None matched to N390TF.

## 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 N390tf RANS S-21 aircraft: https://openairdocs.org/model/n390tf-rans-s-21/aircraft.md
- The Continental IOX340 series engine: https://openairdocs.org/engine/continental-iox340-series.md

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