| Tail Number / N-Number | N8521B |
| Manufacturer | CESSNA |
| Model | 172 |
| Year Built | 1957 |
| Manufacturer's Serial Number | 36221 |
| 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 | 0-300 SER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 145 hp (108 kW) |
| Average Cruising Speed | 105 miles per hour |
| Type of Registrant | Individual |
| Owner Name | HIEBERT ISAAC G |
| Street | ALAMO HUECO CR 223 |
| City | HACHITA |
| State | NM |
| Zip Code | 88040 |
| Region | Southwestern |
| County | Grant County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1957-10-28 |
| Certificate Issue Date | 2017-08-31 |
| Last Action Date | 2020-03-23 |
| Expiration Date | 2027-08-31 |
| Status | Valid Registration |
| Mode S Code | 52730503 |
| Mode S Code Hex | ABB143 |