g-dawg
u have much to learn about captains my friend. if you get into a discussion with them concerning the systems and they say some thing that is incorrect it is very hard for some to admit that an FO could know more than them. u know the best way to handle them is just by agreeing with them. forget reasoning. and always remember you might be right but he is always left..
on a more serious note:
BOAC: if the flt/gnd switch is stuck in flight then can't u just set the pressurisation mode selector to manual and manually open the outflow valve after landing?