| Tail Number / N-Number | N921SL |
| Manufacturer | WALWORTH JOEL E |
| Model | MINI-MAX |
| Year Built | 2001 |
| Manufacturer's Serial Number | 717 |
| 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 | KAWASAKI |
| Engine Model | ALL MDLS A/B |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Type of Registrant | Individual |
| Owner Name | WALWORTH JOEL E |
| Street | 186 BIMINI RD |
| City | COCOA BEACH |
| State | FL |
| Zip Code | 32931-3216 |
| Region | Southern |
| County | Brevard County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2001-08-29 |
| Certificate Issue Date | 2001-04-12 |
| Last Action Date | 2023-01-17 |
| Expiration Date | 2030-02-28 |
| Status | Valid Registration |
| Mode S Code | 53141574 |
| Mode S Code Hex | ACC37C |