I listened in on a conversation between a B2 pilot and some spectators at an airshow. The pilot was being asked about the effectiveness of the "drag rudders". He responded that they were not rudders, they were <insert some acronym & long winded name in here, that I can't possibly remember>. He said that the simple fact that they caused yaw did not make them rudders, and to illustrate his point he said that you could obtain yaw control by means of differential throttling on a twin, yet you still called those things engines, not rudders.

Now, maybe he got it wrong, and maybe he didn't. Bottom line though, is that if we don't all agree as to what constitues a rudder for the purposes of this rule, then the rule should perhaps be reworded as Darryl suggested.

Gordon