SATCO and WWW - my head still hurts from when I discussed this with Lizard-boy at work on Wednesday when we started to look into this.
Speke - It shouldn't get that complex as MATS Pt1 states to give advisory altitudes add the elevation to the advisory height and round up to the nearest 10 feet. So 770ft should sound better than 767!
Lizard - I've spoken to a mate at another unit who was just as surprised as we were to find out about the change. Another wondered if it is a JAR-OPS thing.
Just how many worms are crammed into this particular can?