| Tail Number / N-Number | N441SG |
| Manufacturer | ROBINSON HELICOPTER COMPANY |
| Model | R44 II |
| Year Built | 2004 |
| Manufacturer's Serial Number | 10441 |
| 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 | Individual |
| Owner Name | CHRISTMANN CHARLES D |
| Street | PO BOX 143 |
| City | PATAGONIA |
| State | AZ |
| Zip Code | 85624-0143 |
| Region | Western-Pacific |
| County | Santa Cruz County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2004-07-27 |
| Certificate Issue Date | 2007-01-26 |
| Last Action Date | 2022-02-16 |
| Expiration Date | 2029-05-31 |
| Status | Valid Registration |
| Mode S Code | 51247753 |
| Mode S Code Hex | A54FEB |