| Tail Number / N-Number | N8421 |
| Manufacturer | GRAHAM |
| Model | SMITH MINIPLANE DSA1 |
| Manufacturer's Serial Number | BG6574-1 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | 0-200 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 100 hp (75 kW) |
| Average Cruising Speed | 84 miles per hour |
| Type of Registrant | Individual |
| Owner Name | BINKLEY ELDON D |
| Street | 872 E VILLAGE WAY |
| City | FRUIT HEIGHTS |
| State | UT |
| Zip Code | 84037-2148 |
| Region | Northwest Mountain |
| County | Davis County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1981-05-14 |
| Certificate Issue Date | 2015-04-20 |
| Last Action Date | 2020-11-16 |
| Expiration Date | 2028-04-30 |
| Status | Valid Registration |
| Mode S Code | 52704702 |
| Mode S Code Hex | AB89C2 |