| Tail Number / N-Number | N4540Y |
| Manufacturer | AIR TRACTOR INC |
| Model | AT-502 |
| Year Built | 1990 |
| Manufacturer's Serial Number | 502-0120 |
| 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 | Corporation |
| Owner Name | TLC FLYING INC |
| Street | PO BOX 307 |
| City | COLFAX |
| State | WA |
| Zip Code | 99111-0307 |
| Region | Northwest Mountain |
| County | Whitman County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Restricted |
| Airworthiness Date | 1990-11-13 |
| Certificate Issue Date | 2012-12-18 |
| Last Action Date | 2021-07-20 |
| Expiration Date | 2028-12-31 |
| Status | Valid Registration |
| Mode S Code | 51301547 |
| Mode S Code Hex | A58367 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N4540Y.
| Tail Number / N-Number | N4540Y |
| Manufacturer | PIPER |
| Model | PA-25-235 |
| Manufacturer's Serial Number | 25-4190 |
| 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) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 93 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | ALASKA TRANSPORTATION CO |
| Street | 1311 AIRPORT BLVD |
| City | SAN JOSE |
| State | CA |
| Zip Code | 95110 |
| Region | Western-Pacific |
| County | Whitman County |
| Last Status | Valid Registration |
| Cancellation Date | 1967-07-17 |
| Exported To | MEXICO |