| Tail Number / N-Number | N521SY |
| Manufacturer | EMBRAER S A |
| Model | ERJ 170-200 LR |
| Year Built | 2022 |
| Manufacturer's Serial Number | 17000906 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 88 seats |
| Weight Class | CLASS 3 (20,000+ pounds gross take off weight) |
| Engine Manufacturer | GE |
| Engine Model | CF34-8E5 |
| Engine Type | Turbo-fan |
| Number of Engines | 2 engines |
| Thrust per Engine | 14,510 pounds-force (64.5 kN) |
| Total Thrust | 29,020 pounds-force (129.1 kN) |
| Type of Registrant | Corporation |
| Owner Name | SKYWEST AIRLINES INC |
| Street | 444 S RIVER RD |
| City | SAINT GEORGE |
| State | UT |
| Zip Code | 84790-2085 |
| Region | Northwest Mountain |
| County | Washington County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2022-07-19 |
| Certificate Issue Date | 2022-07-19 |
| Last Action Date | 2022-07-19 |
| Expiration Date | 2029-07-31 |
| Status | Valid Registration |
| Mode S Code | 51507114 |
| Mode S Code Hex | A68E4C |