| Tail Number / N-Number | N123JP |
| Manufacturer | PETRI JAMES P |
| Model | MOD. STEPHENS ARCO |
| Manufacturer's Serial Number | 0001JPP |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 1 seat |
| 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) |
| Type of Registrant | Individual |
| Owner Name | PETRI JAMES P |
| Street | 124 HAWTHORNE AVENUE |
| City | NORTH ADAMS |
| State | MA |
| Zip Code | 01247 |
| Region | New England |
| County | Berkshire County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1986-10-01 |
| Certificate Issue Date | 1982-01-04 |
| Last Action Date | 2022-02-07 |
| Expiration Date | 2029-05-31 |
| Status | Valid Registration |
| Mode S Code | 50057655 |
| Mode S Code Hex | A05FAD |