Originally Posted by phillipas
All aircraft end up on all routes, so it's a matter of chance. I suspect that en e-mail to AY may yield the correct answer - AY tend to be really good in terms of actually reading e-mails and replying with an answer that answers you, rather than sending you a pre-written e-mail which whilst all very informative tells you bugger all.
Or I suspect that our friend OH-LGG, who seems most knowledgable re AY ops may be able to tell you once he/she has the time.