| Tail Number / N-Number | N8321D |
| Manufacturer | BOEING |
| Model | 737-8H4 |
| Year Built | 2012 |
| Manufacturer's Serial Number | 36687 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 140 seats |
| Weight Class | CLASS 3 (20,000+ pounds gross take off weight) |
| Engine Manufacturer | CFM INTL |
| Engine Model | CFM56-7B27E |
| Engine Type | Turbo-fan |
| Number of Engines | 2 engines |
| Thrust per Engine | 27,300 pounds-force (121.4 kN) |
| Total Thrust | 54,600 pounds-force (242.9 kN) |
| Type of Registrant | Corporation |
| Owner Name | SOUTHWEST AIRLINES CO |
| Street | 2702 LOVE FIELD DR # HDQ-4GC |
| City | DALLAS |
| State | TX |
| Zip Code | 75235-1908 |
| Region | Southwestern |
| County | Dallas County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2012-09-25 |
| Certificate Issue Date | 2012-10-10 |
| Last Action Date | 2021-06-23 |
| Expiration Date | 2028-10-31 |
| Status | Valid Registration |
| Mode S Code | 52661107 |
| Mode S Code Hex | AB6247 |