| Tail Number / N-Number | N6421S |
| Manufacturer | CESSNA |
| Model | 150H |
| Year Built | 1967 |
| Manufacturer's Serial Number | 15067221 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | 0-200 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 100 hp (75 kW) |
| Average Cruising Speed | 90 miles per hour |
| Type of Registrant | Individual |
| Owner Name | KNUTSON WAYNE R |
| Street | PO BOX 308 |
| City | THOMPSON |
| State | ND |
| Zip Code | 58278-0308 |
| Region | Great Lakes |
| County | Grand Forks County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1967-10-04 |
| Certificate Issue Date | 2011-11-16 |
| Last Action Date | 2020-07-31 |
| Expiration Date | 2027-11-30 |
| Status | Valid Registration |
| Mode S Code | 52067465 |
| Mode S Code Hex | A86F35 |