| Tail Number / N-Number | N40WW |
| Manufacturer | WESTFALL A WAIN |
| Model | WESTFALL BI-PLANE |
| Manufacturer's Serial Number | WW1 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Type of Registrant | Individual |
| Owner Name | CLAREMONT BRUCE |
| Street | 217 W 2ND ST |
| City | FLORENCE |
| State | CO |
| Zip Code | 81226-1403 |
| Region | Northwest Mountain |
| County | Fremont County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1982-09-11 |
| Certificate Issue Date | 2013-12-11 |
| Last Action Date | 2022-07-11 |
| Expiration Date | 2029-12-31 |
| Status | Valid Registration |
| Mode S Code | 51126121 |
| Mode S Code Hex | A4AC51 |