| Tail Number / N-Number | N421GT |
| Manufacturer | CESSNA |
| Model | 421C |
| Year Built | 1980 |
| Manufacturer's Serial Number | 421C0881 |
| 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 | CONT MOTOR |
| Engine Model | GTSIO-520 SER |
| Engine Type | Reciprocating |
| Number of Engines | 2 engines |
| Horsepower per Engine | 300 hp (224 kW) |
| Total Horsepower | 600 hp (448 kW) |
| Average Cruising Speed | 90 miles per hour |
| Type of Registrant | LLC |
| Owner Name | WHITETAIL GROUP AVIATION LLC |
| Street | 1769 745E ST |
| City | MOUNT STERLING |
| State | IL |
| Zip Code | 62353-1715 |
| Region | Great Lakes |
| County | Brown County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2000-07-22 |
| Certificate Issue Date | 2022-08-31 |
| Last Action Date | 2022-08-31 |
| Expiration Date | 2029-08-31 |
| Status | Valid Registration |
| Mode S Code | 51177776 |
| Mode S Code Hex | A4FFFE |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N421GT.
| Tail Number / N-Number | N421GT |
| Manufacturer | CESSNA |
| Model | 421C |
| Manufacturer's Serial Number | 421C0124 |
| 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) |
| Number of Engines | 2 engines |
| Average Cruising Speed | 90 miles per hour |
| County | Brown County |
| Last Status | N-Number Assigned – but has not yet been registered |
| Cancellation Date | 1989-11-03 |