Hi As far as I can remember I think an armed spoiler (speed breaks) never extend apon wheels touchdown? Has anyone manage to get it work as it should? In my case, the armed spoilers is kind of slave to thrust reversers, but never work apon wheel depress on touchdown.

Throttle must be in idle and I heard something that Autobrakes must be set...Do a test...Ulisses

Calibrate your joystick to ensure the throtle is at iddle. This is what activates the spoilers.Dave Vega

It may depend a lot on the model, I'm not sure. Anyway, I have no problem with them deploying upon touch down when armed. You might need to calibrate your joystick so that it comes to full idle.Darrell