| Tail Number / N-Number | N104X |
| Manufacturer | SMITH |
| Model | THORP T-18 |
| Year Built | 1970 |
| Manufacturer's Serial Number | 624 |
| 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 | O&VO-360 SER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Average Cruising Speed | 97 miles per hour |
| Type of Registrant | Partnership |
| Owner Name | LEIDER ROBERT G |
| Other Names |
|
| Street | 465 SPARROW WAY |
| City | WASHOE VALLEY |
| State | NV |
| Zip Code | 89704-9089 |
| Region | Western-Pacific |
| County | Carson City |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1979-12-10 |
| Certificate Issue Date | 2021-11-20 |
| Last Action Date | 2021-11-20 |
| Expiration Date | 2028-11-30 |
| Status | Valid Registration |
| Mode S Code | 50012635 |
| Mode S Code Hex | A0159D |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N104X.
| Tail Number / N-Number | N104X |
| Manufacturer | BEECH |
| Model | 35 |
| Manufacturer's Serial Number | D-743 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 120 miles per hour |
| Type of Registrant | Co-Ownership |
| Owner Name | HOWERTON WILLIAM R OLIVER N SMITH |
| Street | 1422 NORTH SERRANO STREET |
| City | LOS ANGELES |
| State | CA |
| Zip Code | 90001 |
| Region | Western-Pacific |
| County | Carson City |
| Certificate Issue Date | 1964-07-01 |
| Last Status | Valid Registration |
| Cancellation Date | 1969-07-29 |