| Tail Number / N-Number | N186AS |
| Manufacturer | SHAPPLEY ARNOLD JR |
| Model | RV-4 |
| Manufacturer's Serial Number | 738 |
| 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 | SMITH JOEL L |
| Street | 501 KODIAK TRL |
| City | CEDAR PARK |
| State | TX |
| Zip Code | 78613-4109 |
| Region | Southwestern |
| County | Williamson County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1987-06-23 |
| Certificate Issue Date | 2016-02-22 |
| Last Action Date | 2021-11-27 |
| Expiration Date | 2029-02-28 |
| Status | Valid Registration |
| Mode S Code | 50253407 |
| Mode S Code Hex | A15707 |