A silly system design.
There is a switch which has to be selected by the pilots during line up which puts the spoilers in flight mode. This means they will extend with weight on wheels until the power levers pass a certain angle. So on landing they will extend with weight on wheels once the power levers are reduced to idle (or below whatever angle the microswitch is at).
Last edited by Chesty Morgan; 1st February 2017 at 20:53.