I checked out some pictures here and saw some interesting ones. What caught my eye were pics of British Midland and Swissair planes in Helsinki. To my knowledge, these airlines don't fly to Helsinki at present. Okay, Swissair does but only by code-sharing: their flights are operated by Finnair. So maybe there weren't any AY planes available and they had SR fly the route on that occasion. But BM? Helsinki is not on their route map or anything.

Of course, could be they were just chartered or otherwise making a rare visit...

Anyway, have a good weekend. I'm fleeing from work NOW.