| Tail Number / N-Number | N151TL |
| Manufacturer | ROBINSON HELICOPTER COMPANY |
| Model | R44 II |
| Year Built | 2004 |
| Manufacturer's Serial Number | 10599 |
| 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 | LLC |
| Owner Name | ALPINE AIR ALASKA LLC |
| Street | PO BOX 519 |
| City | GIRDWOOD |
| State | AK |
| Zip Code | 99587-0519 |
| Region | Alaskan |
| County | Anchorage Municipality |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2004-12-21 |
| Certificate Issue Date | 2018-07-06 |
| Last Action Date | 2021-02-18 |
| Expiration Date | 2028-07-31 |
| Status | Valid Registration |
| Mode S Code | 50147632 |
| Mode S Code Hex | A0CF9A |