Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N421TJ.
| Tail Number / N-Number | N421TJ |
| Manufacturer | CESSNA |
| Model | 421 |
| Year Built | 1968 |
| Manufacturer's Serial Number | 421-0051 |
| 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-C |
| Engine Type | Reciprocating |
| Number of Engines | 2 engines |
| Horsepower per Engine | 340 hp (254 kW) |
| Total Horsepower | 680 hp (507 kW) |
| Average Cruising Speed | 172 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | GREAT NORTHERN AIRCRAFT INC |
| Street | 601 COMMERCE CENTER STE 600 |
| City | WILMINGTON |
| State | DE |
| Zip Code | 19801 |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1968-01-20 |
| Certificate Issue Date | 2001-03-30 |
| Last Action Date | 2004-10-13 |
| Last Status | First Notice for Re-Registration/Renewal |
| Cancellation Date | 2010-11-09 |
| Mode S Code | 51200410 |
| Mode S Code Hex | A50108 |