It is notionally a seasonal route but the actual duration of the service varies i.e. it was all year (VS A340s in summer, Martinair 767 in winter) in 1996 but generally operates May to November (as it will this year).
Alex, I'm looking to upload up to the 1st to 18th February tonight to my website (http://fly.to/northwest-spotters
). Note that the early part of the month is already up but I have to pare off against a new log for the month. I take it some other sites just offer the normal scheduled service and the odd foreign charter?
One subcharter for yesterday was G-MIDC operating the AIH 206 yesterday.