BAe 146 Elevator movement
I was on the ground airside at LCY a short while ago watching a 146 trundle off to the far end for departure. As he turned onto the runway to backtrack, I saw him exercise the controls (a full-and-free check?), but the bizarre thing was, I am convinced I saw the right elevator go down, followed by the left one - they didn't move simultaneously. Then they both came back up to neutral together.
Was I seeing things?