| Tail Number / N-Number | N921SS |
| Manufacturer | STORY MARVIN |
| Model | SS-D1 |
| Year Built | 1993 |
| Manufacturer's Serial Number | 001 |
| 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 | VOLKSWAGEN |
| Engine Model | CONVERSION |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 36 hp (27 kW) |
| Type of Registrant | Individual |
| Owner Name | STORY MARVIN L |
| Street | 619 N 75 CIRCLE |
| City | KANSAS CITY |
| State | KS |
| Zip Code | 66112 |
| Region | Central |
| County | Wyandotte County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1994-04-20 |
| Certificate Issue Date | 1992-06-17 |
| Last Action Date | 2020-03-14 |
| Expiration Date | 2027-07-31 |
| Status | Valid Registration |
| Mode S Code | 53141602 |
| Mode S Code Hex | ACC382 |