| Tail Number / N-Number | N173GC |
| Manufacturer | DEHAVILLAND |
| Model | DHC-6-300 |
| Year Built | 1970 |
| Manufacturer's Serial Number | 295 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 22 seats |
| 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 | 2 engines |
| Horsepower per Engine | 750 hp (560 kW) |
| Total Horsepower | 1,500 hp (1,119 kW) |
| Type of Registrant | LLC |
| Owner Name | DIAMOND BAR LLC |
| Street | 12515 WILLOWS RD NE STE 200 |
| City | KIRKLAND |
| State | WA |
| Zip Code | 98034-8795 |
| Region | Northwest Mountain |
| County | King County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1996-11-15 |
| Certificate Issue Date | 2005-10-24 |
| Last Action Date | 2021-03-16 |
| Expiration Date | 2028-08-31 |
| Status | Valid Registration |
| Mode S Code | 50222353 |
| Mode S Code Hex | A124EB |