| Tail Number / N-Number | N644AK |
| Manufacturer | ROBINSON HELICOPTER COMPANY |
| Model | R44 II |
| Year Built | 2004 |
| Manufacturer's Serial Number | 10364 |
| 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 | 300 hp (224 kW) |
| Type of Registrant | Corporation |
| Owner Name | QUICKSILVER AIR INC |
| Street | 2721 CORMORANT ST |
| City | FAIRBANKS |
| State | AK |
| Zip Code | 99709-2565 |
| Region | Alaskan |
| County | Fairbanks North Star Borough |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2004-05-06 |
| Certificate Issue Date | 2004-05-06 |
| Last Action Date | 2023-01-22 |
| Expiration Date | 2027-06-30 |
| Status | Valid Registration |
| Mode S Code | 52072041 |
| Mode S Code Hex | A87421 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N644AK.
| Tail Number / N-Number | N644AK |
| Manufacturer | ROBINSON HELICOPTER |
| Model | R44 |
| Year Built | 2001 |
| Manufacturer's Serial Number | 1081 |
| 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 | 0-540 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 250 hp (187 kW) |
| Type of Registrant | Corporation |
| Owner Name | QUICKSILVER AIR INC |
| Street | 2721 CORMORANT ST |
| City | FAIRBANKS |
| State | AK |
| Zip Code | 99709-2565 |
| County | Fairbanks North Star Borough |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2001-06-12 |
| Certificate Issue Date | 2001-07-19 |
| Last Action Date | 2001-07-19 |
| Last Status | Valid Registration |
| Cancellation Date | 2004-01-16 |
| Exported To | NEW ZEALAND |