| Tail Number / N-Number | N3948K |
| Manufacturer | PIPER |
| Model | PA-28-140 |
| Year Built | 1967 |
| Manufacturer's Serial Number | 28-23824 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 4 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 | 107 miles per hour |
| Type of Registrant | Individual |
| Owner Name | MCILROY WILLIAM E |
| Street | 1430 CARRIAGE OAKS CT |
| City | DYER |
| State | IN |
| Zip Code | 46311-1991 |
| Region | Great Lakes |
| County | Lake County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Certificate Issue Date | 2015-12-04 |
| Last Action Date | 2021-08-17 |
| Expiration Date | 2028-12-31 |
| Status | Valid Registration |
| Mode S Code | 51112437 |
| Mode S Code Hex | A4951F |