| Tail Number / N-Number | N404SD |
| Manufacturer | ROBINSON HELICOPTER COMPANY |
| Model | R44 II |
| Year Built | 2006 |
| Manufacturer's Serial Number | 11217 |
| 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 | TOMS AVIATION INC |
| Street | 151 S ROHLWING RD |
| City | ADDISON |
| State | IL |
| Zip Code | 60101-3027 |
| Region | Great Lakes |
| County | DuPage County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2006-05-02 |
| Certificate Issue Date | 2006-08-03 |
| Last Action Date | 2020-12-31 |
| Expiration Date | 2028-01-31 |
| Status | Valid Registration |
| Mode S Code | 51136421 |
| Mode S Code Hex | A4BD11 |