[slodave]

I've been in the reverse. Owens Valley, flying to Mammoth with my dad. AP was in control, we're half paying attention, when I notice that we're literally hanging on the prop as the AP was trying to maintain level flight at the altitude. I elbow my dad and clue him in, he disengages the AP, levels the nose and we dropped like a rock. We were blown about 2 miles inside of China Lakes as well. We were too low and got caught in the Sierra Wave. We got out of it by flying West, into it, over the Sierras and came into Mammoth via Fresno.