| Tail Number / N-Number | N121WH |
| Manufacturer | WILLIAM M HUDGENS |
| Model | JA30 SUPERSTOL |
| Year Built | 2014 |
| Manufacturer's Serial Number | JA377-05-14 |
| 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 | 912 |
| Engine Type | 4 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 80 hp (60 kW) |
| Kit Manufacturer | JUST AIRCRAFT LLC |
| Kit Model | JA30 SUPERSTOL |
| Type of Registrant | LLC |
| Owner Name | QUALITAIR LLC TRUSTEE |
| Street | FLUGPLATZ MICHELSTADT MOSSAUER STRASSE 17 |
| City | MICHELSTADT |
| Zip Code | 64720 |
| Region | European |
| Country | DE |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2014-10-28 |
| Certificate Issue Date | 2020-12-02 |
| Last Action Date | 2021-01-05 |
| Expiration Date | 2027-12-31 |
| Status | Valid Registration |
| Mode S Code | 50054545 |
| Mode S Code Hex | A05965 |