lever pin 55 to allow attachment of a biasing device such as spring 57 at the opposite end lever 54 has another hole to allow attachment of actuation cable 59 the inner wing latch mount 52 and the outer wing latch mount 53 also have contact areas faces 60 and 61 the operation of the lever 54 is as follows when the wing is moves to its extended position by rotating about mid wing pivot 56 inner wing latch mount 52 and outer wing latch receiver 53 come together until face 60 and face 61 contact and stop the wing 39 s rotational motion faces 60 and 61 may be padded with an elastomeric or other cushioned material to reduce the shock when the wing stops once the wing is in the extended position actuation cable 59 is released which allows spring 57 to pull on lever 54 and rotate 54 around lever pin 55 the head of lever 54 engages in a similar shaped recess in outer wing latch receiver 53 bringing locking faces of the lever head 62 and the lever opposing face 63 into contact with each other since the lever head 62 and the lever opposing face 63 are oriented or have a component of their direction which is tangent.