| Tail Number / N-Number | N166BC |
| Manufacturer | CHAPMAN |
| Model | THORP T-18 |
| Year Built | 1992 |
| Manufacturer's Serial Number | 166 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | LYCOMING |
| Engine Model | 0-290 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 140 hp (104 kW) |
| Average Cruising Speed | 95 miles per hour |
| Type of Registrant | Individual |
| Owner Name | CHAPMAN ADEN B |
| Street | PO BOX 721 |
| City | DRAIN |
| State | OR |
| Zip Code | 97435-0721 |
| Region | Northwest Mountain |
| County | Douglas County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1992-12-04 |
| Certificate Issue Date | 1988-05-24 |
| Last Action Date | 2022-11-17 |
| Expiration Date | 2030-04-30 |
| Status | Valid Registration |
| Mode S Code | 50204024 |
| Mode S Code Hex | A10814 |