I dumb thumbed it. I've been doing some pritty hairy stuff for quite a while. Ya know, the inverted passes a foot above the ground, snap rolls about 20 feet up, that sort of thing. Today, I did a snap roll with the sun just off to the left and I couldn't see what was up or down and I lost it. Excellent engine, awesome flying plane, no problems with the radio or servo's, I just overdid it today. But man, was it fun...