Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N423D.
| Tail Number / N-Number | N423D |
| Manufacturer | COX |
| Model | THORP T-18 |
| Year Built | 1972 |
| Manufacturer's Serial Number | 182 |
| 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) |
| Average Cruising Speed | 97 miles per hour |
| Type of Registrant | Individual |
| Owner Name | DIEDRICH STEPHEN A |
| Street | 24 EMERALD INDUSTRIAL PARK RD |
| City | PONDERAY |
| State | ID |
| Zip Code | 83852-9714 |
| Country | US |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1979-11-10 |
| Certificate Issue Date | 1996-03-19 |
| Last Action Date | 2010-05-28 |
| Last Status | Registration Expired – Pending Cancellation |
| Cancellation Date | 2017-02-17 |
| Mode S Code | 51203417 |
| Mode S Code Hex | A5070F |