Rui
UWS = Unit Weight Statement
Our cargo department would use this to transmit what cargo is being sent, it would include type of unit load device.. ie AKE/PAG (aircraft bins or pallets) serial number of ULD.... final destination.... gross weight.
This would be sent to central load control for aircraft trim planning purposes and then they would use this information along with excpected traffic load to issue LIR (loading instruction report).
The aicraft loading team/dispatcher would then use this LIR to load aircraft correctly.
UWS example:
Flight details here... ie BA707 12/JUL
.PAG80720BA/BGI/2307
.AKE14258BA/BGI/459
.PMC80733BA/GND/4606
Total gross weight: 7372
we used this message for every flight and our aircraft were boeing 747-400, Airbus 340-300/600