# N728DC: 2008 Helmholdt Charles SPORTSMAN 2+2

- Status: Valid registration
- Airframe: [Helmholdt Charles SPORTSMAN 2+2](https://openairdocs.org/model/helmholdt-charles-sportsman-2-plus-2) (registry code 056230Q, 4 seats)
- Engine: [Superior XP-360](https://openairdocs.org/engine/superior-xp-360) (registry code 59252)
- Serial number: 001
- Year built: 2008
- Type: Fixed wing single engine
- Engine type: 4 cycle
- Airworthiness: Experimental, amateur built
- Airworthiness date: August 5, 2008
- Certificate issued: June 25, 2007
- Expires: July 31, 2027
- Mode S code: A9C192
- Registered owner: [Helmholdt Charles D](https://openairdocs.org/faa-owner/HELMHOLDT%20CHARLES%20D)
- Location: [Grand Rapids, MI](https://openairdocs.org/faa-place/MI/Grand%20Rapids)
- Owner type: Individual
- Owner's area on the map: 42.9330° N, 85.5358° W: Placed by OpenAirDocs at the center of ZIP code 49546, 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=728DC
- Page: https://openairdocs.org/aircraft/N728DC

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 (Helmholdt Charles SPORTSMAN 2+2)

None in force.

### Matched by engine (Superior XP-360)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N728DC.

## 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.

- [Incident 20090418008349I](https://openairdocs.org/incident/20090418008349I), Apr 18, 2009: Amtr SPORTSMAN22 (N728DC), Greenville, MI, Minor damage. (-23) Right main landing gear damaged while attempting to land at Greenville, Michigan.

## 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 Helmholdt Charles SPORTSMAN 2+2 aircraft: https://openairdocs.org/model/helmholdt-charles-sportsman-2-plus-2/aircraft.md
- The Superior XP-360 engine: https://openairdocs.org/engine/superior-xp-360.md

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