One way to solve this very quickly,go to the manufacturer and ask.I'd assume BAE have hundred's of these aircraft over the world.If there was a problem,they would be aware of it.. .A copy of the complaints that generated this responce from management may put more light on the subject.But I don't think that will be forthcoming.. .On the news tonight that DVT is not caused by sitting in cattle.How long has that been in the news?