Airbubs, with considerable respect and creaping the thread a bit, you would REALLY declare an emergency because you didn't fancy crossing the pond on two out of three hydraulic systems ? Gosh ! May I suggest that rather than asking the Senior Cabin Attendant " Drills complete........What's for Dinner, Luv?" you might , at least, return, hold, burn off fuel to a lower landing weight, and for CRM pundits, call company, call Mum, call wifey or ex Girl-friend, have a team meeting with the crew in the forward galley, check with junior CA if she agrees with the team decision.....................er, and then, Blimey, land. Landflap suggests that there was more to this than just a single system failure. Back up on the Boeings is immense and two out of three hydraulic systems out would be "Land at the nearest". One out of three, even a major system, is catered for. I agree with Landflap. CONTINUE. Burning off fuel all the way, loadsa time to consider options. Crikey, not your day if you lose another system over the pond because that means Dinner at Goose or Kef ! Not convinced that even that is an"Emergency" ! State of "Urgency"......yes. Depends on what's on the menu at Goose or Kef. Hate fish.
Just to be clear ARTIFICIAL HORIZON ; "Tea & biscuits" with the Management for us UK cousins means that you are in deep doo dah ! No cause for Celebration (!)
Safe flying boys. Boeing boys know that if you are in trouble................LOWER THE RAT !!