| Tail Number / N-Number | N677LA |
| Manufacturer | AIR TRACTOR INC |
| Model | AT-502B |
| Year Built | 2011 |
| Manufacturer's Serial Number | 502B-2738 |
| 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 CANADA |
| Engine Model | PT6A-34AG |
| Engine Type | Turbo-prop |
| Number of Engines | 1 engine |
| Horsepower | 750 hp (560 kW) |
| Type of Registrant | Corporation |
| Owner Name | WESTERLIN HARRINGTON FLYING SERVICE INC |
| Street | PO BOX 350 |
| City | HOLDREGE |
| State | NE |
| Zip Code | 68949-0350 |
| Region | Central |
| County | Phelps County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Restricted |
| Airworthiness Date | 2011-02-17 |
| Certificate Issue Date | 2022-03-16 |
| Last Action Date | 2022-03-16 |
| Expiration Date | 2029-03-31 |
| Status | Valid Registration |
| Mode S Code | 52173264 |
| Mode S Code Hex | A8F6B4 |