| Tail Number / N-Number | N623TW |
| Manufacturer | HAMILTON CHARLES JR |
| Model | CHALLENGER II |
| Year Built | 1985 |
| Manufacturer's Serial Number | CH2-1084-0140 |
| 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 | ROTAX |
| Engine Model | SEE BOMBADIER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Type of Registrant | Individual |
| Owner Name | COLBY JOHN J |
| Street | 2315 6TH ST |
| City | PERU |
| State | IL |
| Zip Code | 61354-2518 |
| Region | Great Lakes |
| County | LaSalle County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1985-07-15 |
| Certificate Issue Date | 2018-09-26 |
| Last Action Date | 2021-06-14 |
| Expiration Date | 2028-09-30 |
| Status | Valid Registration |
| Mode S Code | 52021440 |
| Mode S Code Hex | A82320 |