Are all latest B737 brakes of same material? Steel/Carbon. Does thast have any effect on the category? I've found tables for both in the QRH, but it really is a well kept secret in most of the airlines I've flown with as to which apply. Secondly, if the airline has only 1 type of brake, why not remove the other from the QRH? Confucion will lead to mistakes will lead to..................