# UPS Airlines (5X)

> Express integrator — own aircraft, hubs and ground network, time-definite door to door.

## Key facts

- IATA designator: 5X
- ICAO code: UPS
- AWB prefix: 406
- Primary cargo hub: SDF — Louisville Muhammad Ali International Airport
- Country: United States
- Service model: integrator

## Air waybills

A master air waybill issued by UPS Airlines begins with the prefix 406, followed by an 8-digit serial whose last digit is the first seven digits modulo 7. Verify the prefix against the airline’s own documentation before issuing a waybill against it.

Source: https://airscanner.co/airlines/5x