Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N5973M.
| Tail Number / N-Number | N5973M |
| Manufacturer | CESSNA |
| Model | 421B |
| Year Built | 1971 |
| Manufacturer's Serial Number | 421B0216 |
| 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 | Partnership |
| Owner Name | RICHKEV LTD |
| Street | 602 2ND AVE N PO BOX 906 |
| City | WAHPETON |
| State | ND |
| Zip Code | 58075 |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1971-12-28 |
| Certificate Issue Date | 1982-08-12 |
| Last Action Date | 1991-09-21 |
| Last Status | Registration Expired – Pending Cancellation |
| Cancellation Date | 2013-04-25 |
| Mode S Code | 51735065 |
| Mode S Code Hex | A7BA35 |