| Tail Number / N-Number | N556WN |
| Manufacturer | BOEING |
| Model | 737-7BD |
| Year Built | 2011 |
| Manufacturer's Serial Number | 33936 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 149 seats |
| Weight Class | CLASS 3 (20,000+ pounds gross take off weight) |
| Engine Manufacturer | CFM INTL |
| Engine Model | CFM56-7B24/3 |
| Engine Type | Turbo-fan |
| Number of Engines | 2 engines |
| Thrust per Engine | 22,800 pounds-force (101.4 kN) |
| Total Thrust | 45,600 pounds-force (202.8 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 | 2011-04-08 |
| Certificate Issue Date | 2011-05-13 |
| Last Action Date | 2023-01-22 |
| Expiration Date | 2027-05-31 |
| Status | Valid Registration |
| Mode S Code | 51613666 |
| Mode S Code Hex | A717B6 |