|Motor:||NAVRO Kalinidex K90.4.3800|
|Launch:||NLD45, ASK 't Harde, 19 April 2017|
After the launch of the N30, it was decided to recreate the same rocket. Of course the parachuting system was adjusted. The N31 was again launched with a self-made Kalinidex K90.4.3800 motor. The launch went beautifully, but after the rocket disappeared in the clouds, no one has seen it anymore. We assume that the rocket has crashed. Unfortunately, nothing has been recovered so we have no idea what went wrong.