| Tail Number / N-Number | N684AK |
| Manufacturer | PILATUS |
| Model | PC-12/45 |
| Year Built | 1999 |
| Manufacturer's Serial Number | 266 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 12 seats |
| Weight Class | CLASS 2 (12,500 - 19,999 pounds gross take off weight) |
| Engine Manufacturer | P&W CANADA |
| Engine Model | PT6A-66 SER |
| Engine Type | Turbo-prop |
| Number of Engines | 1 engine |
| Horsepower | 850 hp (634 kW) |
| Type of Registrant | LLC |
| Owner Name | 84 ALPHA KILO LLC |
| Street | 1309 COFFEEN AVE STE 1200 |
| City | SHERIDAN |
| State | WY |
| Zip Code | 82801-5777 |
| Region | Northwest Mountain |
| County | Sheridan County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1999-06-21 |
| Certificate Issue Date | 2021-02-24 |
| Last Action Date | 2022-07-11 |
| Expiration Date | 2028-02-29 |
| Status | Valid Registration |
| Mode S Code | 52211035 |
| Mode S Code Hex | A9121D |