A console mounted armrest includes an adjustable post to raise and lower the armrest, and a linkage. The linkage defines the tilt of the armrest with respect to the post. A single control mechanism controls the motion of the post, and thereby also controls the tilt of the armrest to maintain a desirable orientation with respect to the sidestick. The control mechanism defines multiple positive lock-out positions with respect to the post such that the control mechanism will always engage one of the positive lock-out positions.