This video sequence is the complete ADG drop test on the first flight. At 3 minutes and 20 seconds in is the beginning of the ADG test. When the switch is engaged to drop the ADG you will here a bump right after the switch is thrown and before the spinup of the ADG blades. This portion of the test flight performed as expected. After landing we discovered one of the ADG blades bent. We suspect an actuator/jack allowed the ADG to drop too rapidly, thus allowing the blade to release as the ADG bounced back. At that point, the blade spun up and hit the Fuselage once and was bent. The locking pin stopped the blade from spinning further until re-released when the ADG returned to the down position. As the blade was in its first revolution of wind up, not enough kinetic energy allowed the blade to break the pin or cause more damage. Pay attention to the noise right after the ADG switch is thrown, You will hear a thud. On the second test with replaced actuator and ADG in the other video there is no thud noise after the ADG switch is engaged.
