| Tail Number / N-Number | N4521B |
| Manufacturer | CESSNA |
| Model | 180 |
| Year Built | 1955 |
| Manufacturer's Serial Number | 31420 |
| 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 | O 470R |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 230 hp (172 kW) |
| Average Cruising Speed | 121 miles per hour |
| Type of Registrant | Partnership |
| Owner Name | WITTHAUS JAMES K JR |
| Other Names |
|
| Street | 9801 SIDOROF LN |
| City | ANCHORAGE |
| State | AK |
| Zip Code | 99507-5955 |
| Region | Alaskan |
| County | Anchorage Municipality |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Multiple |
| Airworthiness Date | 2002-07-05 |
| Certificate Issue Date | 1995-01-25 |
| Last Action Date | 2022-01-10 |
| Expiration Date | 2029-04-30 |
| Status | Valid Registration |
| Mode S Code | 51276007 |
| Mode S Code Hex | A57C07 |