No, the airship does not have to follow H4, in which case visual separation and/or geographical separation (North and South) of the Thames can be applied as appropriate.
Airships have historically used the heliroutes as a convenient way of navigating through the London Control Zone; therefore the rules we apply for separating helicopters can be applied to airships too. And airships are a lot easier to spot when you are passing traffic information.
I beg to differ regarding route 3; as long as the airship does not pass West of Vauxhall Bridge, it remains in the London City Control Zone.
Last edited by ATCO Two; 10th Jul 2008 at 22:04.
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