Vilas always has to have the last say Gents . Don't get wound up . He usually quotes some abstract document from an Airbus conference . The A380 also has speedbrake capability in full .
Vilas : The OP asked why and it is a fair question as it is not INHIBITED on other types . Instead of your pompous knowitall answers , answer the actual question if you can . Recommended and inhibited are 2 different issues ! As for the 747-4 , there is no note , recommended or not (that I can find , 767 and 777 included ) . Where does it say specifically "not recommended" on Boeing types ? Very dismissive answers to anyone who doesn't agree .BTW , when referencing material , get a current manual ! And as Runsick said , AI also has a note before selecting Flap Full to retract speedbrake , so obviously the manufacturer recognizes that speedbrake may be needed and used whenever deemed necessary .