| Tail Number / N-Number | N638SC |
| Manufacturer | CZECH SPORT AIRCRAFT A S |
| Model | SPORTCRUISER |
| Year Built | 2018 |
| Manufacturer's Serial Number | C0636 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Light Sport |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | ROTAX |
| Engine Model | 912ULS3 |
| Engine Type | 4 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 100 hp (75 kW) |
| Type of Registrant | Corporation |
| Owner Name | SKYWEST LEASING INC |
| Street | 444 S RIVER RD |
| City | ST GEORGE |
| State | UT |
| Zip Code | 84790-2085 |
| Region | Northwest Mountain |
| County | Washington County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Light Sport |
| Airworthiness Date | 2019-03-28 |
| Certificate Issue Date | 2019-08-20 |
| Last Action Date | 2022-03-22 |
| Expiration Date | 2029-08-31 |
| Status | Valid Registration |
| Mode S Code | 52056407 |
| Mode S Code Hex | A85D07 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N638SC.
| Tail Number / N-Number | N638SC |
| Manufacturer | CESSNA |
| Model | 421B |
| Year Built | 1971 |
| Manufacturer's Serial Number | 421B0142 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 8 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | GTSIO-520-C |
| Engine Type | Reciprocating |
| Number of Engines | 2 engines |
| Horsepower per Engine | 340 hp (254 kW) |
| Total Horsepower | 680 hp (507 kW) |
| Average Cruising Speed | 172 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | DALLAS AVIATION LLC |
| Street | 1744 E 26TH PL |
| City | YUMA |
| State | AZ |
| Zip Code | 85365-3124 |
| County | Washington County |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1971-09-09 |
| Certificate Issue Date | 2009-04-15 |
| Last Action Date | 2009-04-15 |
| Last Status | First Notice for Re-Registration/Renewal |
| Cancellation Date | 2011-03-22 |