| Tail Number / N-Number | N42WM |
| Manufacturer | MEIXNER WILLIAM E |
| Model | COCKATOO |
| Manufacturer's Serial Number | 489 |
| 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 | 0-320 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Type of Registrant | Individual |
| Owner Name | MEIXNER WILLIAM E |
| Street | 1955 N MARSHALL AVE STE 101 |
| City | EL CAJON |
| State | CA |
| Zip Code | 92020-1140 |
| Region | Western-Pacific |
| County | San Diego County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1991-04-24 |
| Certificate Issue Date | 2021-04-24 |
| Last Action Date | 2021-04-24 |
| Expiration Date | 2028-04-30 |
| Status | Valid Registration |
| Mode S Code | 51175506 |
| Mode S Code Hex | A4FB46 |