| Tail Number / N-Number | N623JH |
| Manufacturer | WEGMAN |
| Model | THORP T-18 |
| Year Built | 1976 |
| Manufacturer's Serial Number | 940 |
| 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 | 0-290 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 140 hp (104 kW) |
| Average Cruising Speed | 95 miles per hour |
| Type of Registrant | Individual |
| Owner Name | HOLMES JEFFREY T |
| Street | 14 GREENBRIAR RD |
| City | OXFORD |
| State | CT |
| Zip Code | 06478-1147 |
| Region | New England |
| County | New Haven County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1980-04-30 |
| Certificate Issue Date | 1997-05-16 |
| Last Action Date | 2023-01-22 |
| Expiration Date | 2027-05-31 |
| Status | Valid Registration |
| Mode S Code | 52021062 |
| Mode S Code Hex | A82232 |