quote:"Some aircraft will not be fitted with the UCS"
I didn't take it as a statement that some planes would not be fitted with UCS at all. If you read the full quote: "For operational reasons we cannot guarantee that aircraft will not change without prior notice. Some aircraft will not be fitted with the UCS." - I think it's just saying "The planes we're planning to run on these routes should have UCS, but we might have to change an aircraft for ops reasons and the replacement might not have UCS"

Cheers
Michael