| Tail Number / N-Number | N18520 |
| Manufacturer | PORTERFIELD |
| Model | 35W |
| Manufacturer's Serial Number | 310 |
| 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 | WARNER |
| Engine Model | SCA JR SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 90 hp (67 kW) |
| Average Cruising Speed | 76 miles per hour |
| Type of Registrant | Individual |
| Owner Name | HUTTMAN LARRY M |
| Street | 1329 6TH ST |
| City | WOODLAND |
| State | CA |
| Zip Code | 95695 |
| Region | Western-Pacific |
| County | Yolo County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Certificate Issue Date | 1981-08-25 |
| Last Action Date | 2021-01-22 |
| Expiration Date | 2028-04-30 |
| Status | Valid Registration |
| Mode S Code | 50252766 |
| Mode S Code Hex | A155F6 |