LOL.....I bet! Ok, visual approach, no AP. I was just thinking that maybe the AP was trimming out local winds or the roll that may or may not have been generated by the aircraft wake, and that once you D/C it, the aircraft snap-rolled in that direction.http://www.my-buddy-icon.com/Icons/objects/red_3d_plane.gifAlex ChristoffN562ZBaltimore, MD

It was a very reasonable question. I considered that as well as a few other possibilities, except that I initially ruled out wake turbulence because there hadn't been any traffic.However, I have learned a valuable lesson about avoiding it during approach and landing. The fact that Active Sky models this blow me away! And since it can happen, but doesn't most of the time, one must be alert, and I'm sure this is similar to real life.Yesterday, I happened to follow a 737 (again!) into a high altitude (7300 feet) airport located in a canyon, and I basically had one shot to land, since the terrain would have made a go-around risky. Believe me, I was on my toes. And... I made it!