# N468MM: 2022 Babcock Mike L S-21 OUTBOUND

- Status: Valid registration
- Airframe: [Babcock Mike L S-21 OUTBOUND](https://openairdocs.org/model/babcock-mike-l-s-21-outbound) (registry code 05638J4, 2 seats)
- Engine: [Ulpower UL-520 series](https://openairdocs.org/engine/ulpower-ul-520-series) (registry code 62002)
- Serial number: 06180007
- Year built: 2022
- Type: Fixed wing single engine
- Engine type: 4 cycle
- Kit: Rans Designs Inc S-21 OUTBOUND
- Airworthiness: Experimental, amateur built
- Airworthiness date: November 7, 2022
- Certificate issued: April 19, 2019
- Expires: April 30, 2029
- Mode S code: A5B872
- Registered owner: [Babcock Mike L](https://openairdocs.org/faa-owner/BABCOCK%20MIKE%20L)
- Location: [Lakeside, OR](https://openairdocs.org/faa-place/OR/Lakeside)
- Owner type: Individual
- Owner's area on the map: 43.5634° N, 124.0405° W: Placed by OpenAirDocs at the center of ZIP code 97449, 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=468MM
- Page: https://openairdocs.org/aircraft/N468MM

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 Ulpower UL-520 model are included.

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

### Matched by airframe (Babcock Mike L S-21 OUTBOUND)

None in force.

### Matched by engine (Ulpower UL-520 series)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB WPR23LA184](https://openairdocs.org/ntsb/WPR23LA184), May 10, 2023: Rans S-21 (N468MM), Creswell, OR, substantial damage. Probable cause: A total loss of engine power caused by fatigue cracking and fracture of the crankshaft due to severe wear of the bearings.

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 20230509007519A](https://openairdocs.org/incident/20230509007519A), May 9, 2023: Babcock Mike L S-21 OUTBOUND (N468MM), Creswell, OR, Substantial damage. Aircraft lost power in flight. Pilot made emergency landing in the field. Aircraft flipped over during braking.

## 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 Babcock Mike L S-21 OUTBOUND aircraft: https://openairdocs.org/model/babcock-mike-l-s-21-outbound/aircraft.md
- The Ulpower UL-520 series engine: https://openairdocs.org/engine/ulpower-ul-520-series.md

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