| Tail Number / N-Number | N450WM |
| Manufacturer | ARBUTHNOT MICHAEL |
| Model | GLASAIR III |
| Year Built | 1996 |
| Manufacturer's Serial Number | 3125 |
| 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 | IO-540 SER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 300 hp (224 kW) |
| Type of Registrant | Individual |
| Owner Name | ARBUTHNOT MICHAEL D |
| Street | 200 CORSAIR RANCH PL |
| City | PAGOSA SPRINGS |
| State | CO |
| Zip Code | 81147-7020 |
| Region | Northwest Mountain |
| County | Archuleta County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1996-10-30 |
| Certificate Issue Date | 1993-02-05 |
| Last Action Date | 2022-04-13 |
| Expiration Date | 2029-09-30 |
| Status | Valid Registration |
| Mode S Code | 51272034 |
| Mode S Code Hex | A5741C |