# N991MS: 2004 Stephan Michael RV-8

- Status: Valid registration
- Airframe: [Stephan Michael RV-8](https://openairdocs.org/model/stephan-michael-rv-8) (registry code 05617M3, 2 seats)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Serial number: 81382
- Year built: 2004
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: November 15, 2004
- Certificate issued: April 28, 2004
- Expires: January 31, 2030
- Mode S code: ADD77E
- Registered owner: [Stephan Michael G](https://openairdocs.org/faa-owner/STEPHAN%20MICHAEL%20G)
- Location: [Grand Prairie, TX](https://openairdocs.org/faa-place/TX/Grand%20Prairie)
- Owner type: Individual
- Owner's area on the map: 32.7731° N, 97.0052° W: Placed by OpenAirDocs at the center of ZIP code 75050, 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=991MS
- Page: https://openairdocs.org/aircraft/N991MS

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 (Stephan Michael RV-8)

None in force.

### Matched by engine (Amateur-built UNKNOWN ENG)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N991MS.

## FAA accident and incident reports

None matched to N991MS.

## 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 Stephan Michael RV-8 aircraft: https://openairdocs.org/model/stephan-michael-rv-8/aircraft.md
- The Amateur-built UNKNOWN ENG engine: https://openairdocs.org/engine/amateur-built-unknown-eng.md

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.