THE DEFINITIVE SOLUTION HERE!!! http://www.pilote-virtuel.com/viewtopic.php?id=66079 For those who don't speak french: There's an error in the aircraft.cfg, in the [contact points] section: point.0 =1, 0.82, 0.00, -3.75, 4000, 0, 0.633, 35, 0.13, 1.80, 0.35, 3.1, 3.1, 0, 152, 180 //Tarmac, non-castoring point.1 =1, -8.04, -5.40, -3.94, 6000, 1, 1.00, 0, 0.30, 2.50, 0.36, 3.1, 3,1, 2, 152, 200 point.2 =1, -8.04, 5.00, -3.94, 6000, 2, 1.00, 0, 0.30, 2.50, 0.36, 3.1, 3.1, 3, 152, 200 Replace the comma by a dot, and that's all folks! No need for turning off the crash detection any more!!!