| Tail Number / N-Number | N8521M |
| Manufacturer | BEECH |
| Model | P35 |
| Year Built | 1963 |
| Manufacturer's Serial Number | D-7213 |
| 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 | I0-470 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 260 hp (194 kW) |
| Average Cruising Speed | 150 miles per hour |
| Type of Registrant | Co-Ownership |
| Owner Name | MCLEAN WILLIAM C II |
| Other Names |
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| Street | 20850 ALAMINOS DR |
| City | SAUGUS |
| State | CA |
| Zip Code | 91350-1805 |
| Region | Western-Pacific |
| County | Los Angeles County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1963-07-08 |
| Certificate Issue Date | 2021-10-06 |
| Last Action Date | 2021-10-06 |
| Expiration Date | 2028-10-31 |
| Status | Valid Registration |
| Mode S Code | 52730515 |
| Mode S Code Hex | ABB14D |