| Tail Number / N-Number | N1540S |
| Manufacturer | AIR TRACTOR INC |
| Model | AT-502 |
| Year Built | 1992 |
| Manufacturer's Serial Number | 502-0171 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | P&W |
| Engine Model | PT6A SER |
| Engine Type | Turbo-prop |
| Number of Engines | 1 engine |
| Horsepower | 750 hp (560 kW) |
| Type of Registrant | Individual |
| Owner Name | SCHWENK JOHN P |
| Street | PO BOX 102 |
| City | APPLETON |
| State | MN |
| Zip Code | 56208-0102 |
| Region | Great Lakes |
| County | Swift County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Restricted |
| Airworthiness Date | 1992-03-24 |
| Certificate Issue Date | 2001-09-05 |
| Last Action Date | 2022-08-16 |
| Expiration Date | 2028-05-31 |
| Status | Valid Registration |
| Mode S Code | 50155564 |
| Mode S Code Hex | A0DB74 |