The only possible way STK could operate 319s out of SEN on regular pax flights would be if it was an EZY franchise
Huh..!? - "one season wonder" cheap bucket and spade operations like this come up all the time, some people have made a career out of it. Normally this is ex Gatwick but with the slot situation there that option is closed now. Could be very possible STK are linking up with someone to do this.