According to MCA the aircraft won't be operational until four months after the Bristow contract at Stornoway ends ,the second aircraft won't be operational until Spring 2008 and there will have to be S61Ns leased meantime to plug gap.Also the southern contracts don't end until mid 2008 so the AW139s won't come aboard until then.So are all the Bristow contracts being extended or are CHC providing temporary cover until then ?