| Tail Number / N-Number | N660S |
| Manufacturer | CESSNA |
| Model | 525A |
| Year Built | 2006 |
| Manufacturer's Serial Number | 525A0305 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 8 seats |
| Weight Class | CLASS 2 (12,500 - 19,999 pounds gross take off weight) |
| Engine Manufacturer | WILLIAMS |
| Engine Model | FJ44-3A-24 |
| Engine Type | Turbo-fan |
| Number of Engines | 2 engines |
| Thrust per Engine | 2,490 pounds-force (11.1 kN) |
| Total Thrust | 4,980 pounds-force (22.2 kN) |
| Type of Registrant | LLC |
| Owner Name | ALPINE II LLC |
| Street | 3835 NORWOOD CT |
| City | BOULDER |
| State | CO |
| Zip Code | 80304-1345 |
| Region | Northwest Mountain |
| County | Boulder County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2006-05-04 |
| Certificate Issue Date | 2017-12-22 |
| Last Action Date | 2020-07-20 |
| Expiration Date | 2027-12-31 |
| Status | Valid Registration |
| Mode S Code | 52132711 |
| Mode S Code Hex | A8B5C9 |