Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N21665.
| Tail Number / N-Number | N21665 |
| Manufacturer | SIMPSON JOHN W |
| Model | WS503 |
| Year Built | 1994 |
| Manufacturer's Serial Number | WS001-A |
| 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) |
| Engine Manufacturer | BOMBARDIER |
| Engine Model | ROTAX (ALL) |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Type of Registrant | Individual |
| Owner Name | BERGE GEORGE W JR |
| Street | 703 OTTER CREEK RD |
| City | BOW |
| State | KY |
| Zip Code | 42717-8806 |
| Country | US |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1994-07-14 |
| Certificate Issue Date | 1999-06-30 |
| Last Action Date | 2008-07-15 |
| Last Status | Registration Expired – Pending Cancellation |
| Cancellation Date | 2013-04-08 |
| Mode S Code | 50351424 |
| Mode S Code Hex | A1D314 |