# N778MS: 2018 Stephen J Hoffman MS-500

- Status: Valid registration
- Airframe: [Stephen J Hoffman MS-500](https://openairdocs.org/model/stephen-j-hoffman-ms-500) (registry code 05634S6, 2 seats)
- Engine: [Argus AS10-P](https://openairdocs.org/engine/argus-as10-p) (registry code 05406)
- Serial number: 4
- Year built: 2018
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, exhibition
- Airworthiness date: May 23, 2018
- Certificate issued: February 12, 2016
- Expires: February 28, 2029
- Mode S code: AA87E3
- Registered owner: [Hoffman Stephen J](https://openairdocs.org/faa-owner/HOFFMAN%20STEPHEN%20J)
- Location: [Seabrook, TX](https://openairdocs.org/faa-place/TX/Seabrook)
- Owner type: Individual
- Owner's area on the map: 29.5845° N, 95.0396° W: Placed by OpenAirDocs at the center of ZIP code 77586, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=778MS
- Page: https://openairdocs.org/aircraft/N778MS

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 (Stephen J Hoffman MS-500)

None in force.

### Matched by engine (Argus AS10-P)

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 CEN23LA023](https://openairdocs.org/ntsb/CEN23LA023), Oct 29, 2022: Stephen J Hoffman MS-500 (N778MS), Houston, TX, substantial damage. Probable cause: The pilot’s failure to secure the magneto switch before attempting to hand rotate the engine which resulted in an inadvertent engine start, a runaway airplane, and subsequent impact with parked…

## 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 20221029019702A](https://openairdocs.org/incident/20221029019702A), Oct 29, 2022: Stephen J Hoffman MS-500 (N778MS), Houston, TX, Substantial damage. Iic statement: there were several eyewitnesses to the accident and this statement has excerpts from their observations and pilot statement. The pilot of…

## 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 Stephen J Hoffman MS-500 aircraft: https://openairdocs.org/model/stephen-j-hoffman-ms-500/aircraft.md
- The Argus AS10-P engine: https://openairdocs.org/engine/argus-as10-p.md

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