| Tail Number / N-Number | N3665H |
| Manufacturer | ENGINEERING & RESEARCH |
| Model | ERCOUPE 415-C |
| Year Built | 1946 |
| Manufacturer's Serial Number | 4290 |
| 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 | A&C75 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 75 hp (56 kW) |
| Average Cruising Speed | 90 miles per hour |
| Type of Registrant | Individual |
| Owner Name | POLOS GEORGE S |
| Street | 8304 W PEPPER CT |
| City | KNOXVILLE |
| State | TN |
| Zip Code | 37923-6757 |
| Region | Central |
| County | Knox County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1955-10-28 |
| Certificate Issue Date | 2020-03-03 |
| Last Action Date | 2022-11-17 |
| Expiration Date | 2030-03-31 |
| Status | Valid Registration |
| Mode S Code | 51022645 |
| Mode S Code Hex | A425A5 |