| Tail Number / N-Number | N6421D |
| Manufacturer | NORTH AMERICAN |
| Model | SNJ-4 |
| Manufacturer's Serial Number | 88-13386 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | P&W |
| Engine Model | R1340 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 600 hp (448 kW) |
| Average Cruising Speed | 141 miles per hour |
| Type of Registrant | Individual |
| Owner Name | BIBBER EUGENE A |
| Street | 1878 FLIGHTLINE DR |
| City | LINCOLN |
| State | CA |
| Zip Code | 95648-9669 |
| Region | Western-Pacific |
| County | Placer County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1959-06-12 |
| Certificate Issue Date | 2021-05-13 |
| Last Action Date | 2021-05-13 |
| Expiration Date | 2028-05-31 |
| Status | Valid Registration |
| Mode S Code | 52067450 |
| Mode S Code Hex | A86F28 |