| Tail Number / N-Number | N421GR |
| Manufacturer | CESSNA |
| Model | 421B |
| Year Built | 1993 |
| Manufacturer's Serial Number | 421B0597 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 8 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | AMA/EXPR |
| Engine Model | UNKNOWN ENG |
| Number of Engines | 2 engines |
| Average Cruising Speed | 172 miles per hour |
| Type of Registrant | LLC |
| Owner Name | SPARTAN AVIATION LLC |
| Street | 15167 US HWY 331 BUSINESS RTE STE A |
| City | FREEPORT |
| State | FL |
| Zip Code | 32439 |
| Region | Southern |
| County | Walton County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1993-05-19 |
| Certificate Issue Date | 2021-09-01 |
| Last Action Date | 2021-09-01 |
| Expiration Date | 2028-09-30 |
| Status | Valid Registration |
| Mode S Code | 51177774 |
| Mode S Code Hex | A4FFFC |