Oh how depressing to see yet another thread where Guvnor, and Bus429 ('the pilots friend' oh yeah!)have to stick their unwelcome oars in. Guys, this is 'Pprune' (for pilots!). You have nothing to say that is relevant or interesting, and you are wasting my modem time. Why doesn't the engineer take his crap to an engineering forum- isn't it a bit sad you have so much time to go poking fun to amuse yourself? And Guvnor.....who are you? Are you a frightfully important airline executive running big companies? Not!