Diminution de la puissance lors d'un exercice de panne moteur en vol stationnaire, collision avec le sol, en instruction

Données préliminaires issues de la notification des autorités de Pologne : during an emergency procedure training (a simulated engine failure) with a student and an instructor, close to the ground, a rapid decrease of RPM took place. A broken cam of the throttle was found. No injury. Helicopter destroyed.