| Tail Number / N-Number | N121WY |
| Manufacturer | MURPHY KRISTOPHER R |
| Model | AVID MARK 4 |
| Year Built | 2009 |
| Manufacturer's Serial Number | 1593D |
| 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 | 912ULS SERIES |
| Engine Type | 4 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 100 hp (75 kW) |
| Kit Manufacturer | AVID AIRCRAFT |
| Kit Model | AVID MARK IV |
| Type of Registrant | Co-Ownership |
| Owner Name | HYATT GERALD E |
| Other Names |
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| Street | 2329 OMAHA TRL |
| City | BAR NUNN |
| State | WY |
| Zip Code | 82601-7606 |
| Region | Northwest Mountain |
| County | Natrona County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2010-10-22 |
| Certificate Issue Date | 2018-09-04 |
| Last Action Date | 2021-04-27 |
| Expiration Date | 2028-09-30 |
| Status | Valid Registration |
| Mode S Code | 50054564 |
| Mode S Code Hex | A05974 |