| Tail Number / N-Number | N3940S |
| Manufacturer | CESSNA |
| Model | 172E |
| Year Built | 1964 |
| Manufacturer's Serial Number | 17251140 |
| 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 | CONT MOTOR |
| Engine Model | 0-300 SER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 145 hp (108 kW) |
| Average Cruising Speed | 105 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | PRINCESS AIR INC |
| Street | 51217 225TH AVE |
| City | POCAHONTAS |
| State | IA |
| Zip Code | 50574-8601 |
| Region | Central |
| County | Pocahontas County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1964-01-20 |
| Certificate Issue Date | 1998-12-01 |
| Last Action Date | 2021-08-12 |
| Expiration Date | 2029-01-31 |
| Status | Valid Registration |
| Mode S Code | 51112016 |
| Mode S Code Hex | A4940E |