| Tail Number / N-Number | N4321K |
| Manufacturer | NAVION |
| Model | NAVION A |
| Year Built | 1946 |
| Manufacturer's Serial Number | NAV-4-1321 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | E185 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 205 hp (153 kW) |
| Average Cruising Speed | 120 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | AMERICAN AIRPOWER HERITAGE FLYING MUSEUM |
| Street | PO BOX 764769 |
| City | DALLAS |
| State | TX |
| Zip Code | 75376-4769 |
| Region | Southwestern |
| County | Dallas County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1955-09-06 |
| Certificate Issue Date | 2007-05-09 |
| Last Action Date | 2022-12-12 |
| Expiration Date | 2030-04-30 |
| Status | Valid Registration |
| Mode S Code | 51226421 |
| Mode S Code Hex | A52D11 |