| Tail Number / N-Number | N3947S |
| Manufacturer | PIPER |
| Model | J3C-65 |
| Year Built | 1947 |
| Manufacturer's Serial Number | 17462 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | C90 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 95 hp (71 kW) |
| Average Cruising Speed | 67 miles per hour |
| Type of Registrant | LLC |
| Owner Name | AIR VENTURE LLC |
| Street | 482 N HURON RD |
| City | AU GRES |
| State | MI |
| Zip Code | 48703-9618 |
| Region | Great Lakes |
| County | Arenac County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1983-09-30 |
| Certificate Issue Date | 2015-04-13 |
| Last Action Date | 2020-11-11 |
| Expiration Date | 2028-04-30 |
| Status | Valid Registration |
| Mode S Code | 51112403 |
| Mode S Code Hex | A49503 |