I understand a helicopter in spin would mean a stabilizer is gone and the helicopter cannot maintain its stable altitude. However, I've noticed that helicopters have a tendency not to dip in free fall. I mention that bc I am curious as to what force is at play when objects and people (sorry for morbid picture) fall out. My understanding is that the helicopter falling disturbs the wind making it pick up in speed. I believe it is Newton's third law at play bc I've noticed that objects will fall out in the opposite direction relative to the motion of the helicopter. I'm sorry if it truly is simple as gravity causes people fall out but I'm unsure. I will also state that the objects could appear to fall in the opposite direction bc they are no longer moving with the plane.