As a reminder, this is what might happen:
http://flightlevel.20megsfree.com/
Oh and safetypee; it should be drilled to avoid Cbs. Remember the F28 losing a wing while circumnavigating?
http://aviation-safety.net/database/record.php?id=19811006-0〈=en I still have to find the guy that can teach me which Cb will be fatal and which one not.