| Tail Number / N-Number | N728DC |
| Manufacturer | HELMHOLDT CHARLES |
| Model | SPORTSMAN 2+2 |
| Year Built | 2008 |
| Manufacturer's Serial Number | 001 |
| Aircraft Type | Fixed wing single engine |
| Category | Amphibian |
| Builder Certification | Not Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | SUPERIOR |
| Engine Model | XP-360 |
| Engine Type | 4 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 170 hp (127 kW) |
| Type of Registrant | Individual |
| Owner Name | HELMHOLDT CHARLES D |
| Street | 7695 CASCADE RD SE |
| City | GRAND RAPIDS |
| State | MI |
| Zip Code | 49546-9112 |
| Region | Great Lakes |
| County | Kent County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2008-08-05 |
| Certificate Issue Date | 2007-06-25 |
| Last Action Date | 2020-03-02 |
| Expiration Date | 2027-07-31 |
| Status | Valid Registration |
| Mode S Code | 52340622 |
| Mode S Code Hex | A9C192 |