Also a problem in fighter AC with T-tail.. .Stalling the F-104 Starfighter caused a sudden uncontrollable pitchup momentum. Therefore even preproduction models type YF-104A(17 build) received a strong kicker called APC(auto pitch control) which fired at critical limit and pushed the nose down. Additionally in landing flap configuration (slow flight)a boundary layer control was developed, which guided highpressured air from the engine compressor evenly over the wings to stabilize the airflow. . .2 big problems were never solved:. .1) At low level flights the APC could malfunction and fire unintentionally. It happened and was always a killing item.. .2)Boundary layer control duct broke on one side, causing sudden unsymmetric lift conditions, hence high roll rates. No chance to recover. . .Regards. .. .Hello flash2001, you beat me by 1 minute. <img border="0" title="" alt="[Smile]" src="smile.gif" />. . . . <small>[ 28 March 2002, 00:15: Message edited by: Captain104 ]</small>