Strange response from Turin - must be the late hour? Nothing wrong with enplaning & deplaning. Arguably simpler than the word disembark, which I suppose literally means "to reverse the process of getting on a boat". It's good to see the English vocabulary develop rather than being stuck in some medieval time warp where all our technical terms are nautical because there were no flying machines then. Heaven help us if computer vocabulary was so constrained!
Anyway, good luck to Cityflyer with the new machines.