Look how they test the brakes (http://www.wired.com/autopia/2011/02/looking-inside-boeings-new-747/?utm_term=Farzand+Ali&pid=683 http://www.wired.com/autopia/20

Look how they test the brakes (http://www.wired.com/autopia/2011/02/looking-inside-boeings-new-747/?utm_term=Farzand+Ali&pid=683 http://www.wired.com/autopia/2011/02/looking-inside-boeings-...): >One of the final tests still on the agenda for the 747-8 test pilots is a maximum braking tests. The pilots will abort a take off at approximately 184 knots (212 mph) and come to a stop by standing on the brakes without using thrust reverse devices. The brakes must be at their maximum allowable wear at the time of the test. The brakes are 'pre-worn' a bit in the shop, but most of the work comes down to the pilots to get them ready for the big day. >"We do repeated, abusive landings to wear down the brakes," says test pilot Mark Feuerstein. They slow down from over two hundred miles an hour by standing on the brakes.