[QUOTE=tubby linton;10460844]
It says there that Oceanic Clearance requests must be made 40 minutes 0rior to Oceanic entry. That's the minimum. The maximum is 90 minutes prior to entry and I'd advise crews to make their request as early as possible (but not greater than 90 minutes before) as it's first come, first served with Shanwick and the earlier you get the request in with them, the more likely you are to get what you want. Many folks have to trundle down the T routes below FL300 due capacity during strikes.