# N405MB: 2025 Alex Bantum RANS S-21 OUTBOUND

- Status: Valid registration
- Airframe: [Alex Bantum RANS S-21 OUTBOUND](https://openairdocs.org/model/alex-bantum-rans-s-21-outbound) (registry code 05642ZM, 2 seats)
- Engine: [Rotax 916 IS A](https://openairdocs.org/engine/rotax-916-is-a) (registry code 55623)
- Serial number: 10240403
- Year built: 2025
- Type: Fixed wing single engine
- Engine type: 4 cycle
- Kit: Rans Designs Inc S-21 OUTBOUND
- Airworthiness: Experimental, amateur built
- Airworthiness date: April 3, 2025
- Certificate issued: March 11, 2025
- Expires: March 31, 2032
- Mode S code: A4C049
- Registered owner: [Amjj LLC](https://openairdocs.org/faa-owner/AMJJ%20LLC)
- Location: [Kalispell, MT](https://openairdocs.org/faa-place/MT/Kalispell)
- Owner type: LLC
- Owner's area on the map: 48.2306° N, 114.4033° W: Placed by OpenAirDocs at the center of ZIP code 59901, within about 12 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=405MB
- Page: https://openairdocs.org/aircraft/N405MB

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 (Alex Bantum RANS S-21 OUTBOUND)

None in force.

### Matched by engine (Rotax 916 IS A)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N405MB.

## FAA accident and incident reports

None matched to N405MB.

## 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 Alex Bantum RANS S-21 OUTBOUND aircraft: https://openairdocs.org/model/alex-bantum-rans-s-21-outbound/aircraft.md
- The Rotax 916 IS A engine: https://openairdocs.org/engine/rotax-916-is-a.md

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