| Tail Number / N-Number | N54GP |
| Manufacturer | SWEARINGEN |
| Model | SA-226AT |
| Year Built | 1975 |
| Manufacturer's Serial Number | AT034 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 12 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | AIRESEARCH |
| Engine Model | 331 SER 605HP |
| Engine Type | Turbo-prop |
| Number of Engines | 2 engines |
| Horsepower per Engine | 605 hp (451 kW) |
| Total Horsepower | 1,210 hp (903 kW) |
| Average Cruising Speed | 232 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | CASTLE AVIATION INC |
| Street | 5430 LAUBY RD |
| City | NORTH CANTON |
| State | OH |
| Zip Code | 44720-1581 |
| Region | Great Lakes |
| County | Stark County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1975-03-08 |
| Certificate Issue Date | 2015-12-02 |
| Last Action Date | 2021-07-23 |
| Expiration Date | 2028-12-31 |
| Status | Valid Registration |
| Mode S Code | 51553067 |
| Mode S Code Hex | A6D637 |