| Tail Number / N-Number | N421HK |
| Manufacturer | ROBINSON HELICOPTER COMPANY |
| Model | R22 |
| Manufacturer's Serial Number | 4273 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Type of Registrant | LLC |
| Owner Name | HOTEL KILO HOLDINGS LLC |
| Street | 1289 LA MIRADA ST |
| City | LAGUNA BEACH |
| State | CA |
| Zip Code | 92651-3550 |
| Region | Western-Pacific |
| County | Orange County |
| Country | US |
| Fractional Ownership | No |
| Certificate Issue Date | 2014-09-10 |
| Last Action Date | 2020-04-18 |
| Expiration Date | 2027-09-30 |
| Status | Valid Registration |
| Mode S Code | 51200017 |
| Mode S Code Hex | A5000F |