I was always under the impression that Air Scandic operated under the AOC of Air Cordial (whoever they are) so they were always able to op with SCY flight codes. I also heard that this AOC was withdrawn at Air Cordials request last year.
The Air Scandic flights ex STN have always opd with both VIK and SCY codes as they a/c is VIKING MD aircraft.
I dont know whats gonig on with scandic they are always an airline to their own!!!