| Tail Number / N-Number | N121DT |
| Manufacturer | TIMMS DAVID WILLIAM |
| Model | LONG-EZ |
| Year Built | 1988 |
| Manufacturer's Serial Number | 1569 |
| 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 | TIMMS DAVID W TRUSTEE |
| Street | 4845 MUIRWOOD CT |
| City | SIMI VALLEY |
| State | CA |
| Zip Code | 93063-2450 |
| Region | Western-Pacific |
| County | Ventura County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2003-08-26 |
| Certificate Issue Date | 2005-12-16 |
| Last Action Date | 2022-01-10 |
| Expiration Date | 2029-02-28 |
| Status | Valid Registration |
| Mode S Code | 50053706 |
| Mode S Code Hex | A057C6 |