| Tail Number / N-Number | N644TC |
| Manufacturer | ROBINSON HELICOPTER COMPANY |
| Model | R44 II |
| Year Built | 2004 |
| Manufacturer's Serial Number | 10523 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | LYCOMING |
| Engine Model | IO 540 SER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 260 hp (194 kW) |
| Type of Registrant | Corporation |
| Owner Name | CHENA RIVER AVIATION INC |
| Street | PO BOX 84012 |
| City | FAIRBANKS |
| State | AK |
| Zip Code | 99708-4012 |
| Region | Alaskan |
| County | Fairbanks North Star Borough |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2004-10-19 |
| Certificate Issue Date | 2005-03-29 |
| Last Action Date | 2022-08-15 |
| Expiration Date | 2030-01-31 |
| Status | Valid Registration |
| Mode S Code | 52072703 |
| Mode S Code Hex | A875C3 |