Just a thought. If you do have a total comms failure, VHF/HF/ACARS, before setting out across the Atlantic do you really want to continue? If you can't raise anybody, anywhere on any box then there is a strong chance that you have something much more serious to cope with than a failed comms system, or will have in the near future!
I appreciate this is a diversion from the theoretically correct procedure to the practical but I just wonder what others would want to do?
