Anyone thinking of going to South Africa should be warned that students there are campaigning to repeal the Law of Gravity. This means that any aircraft entering South African jurisdiction will no longer feel the force of Gravity. The picture below shows the effect of this.
The plane will continues in a striaght line as per Newtons First Law.
If they repeal the first Law, all may still not be ok. They are actually thinking of repealing all Western Laws of science. If they repeal Newtons third law, – equal and opposite reactions – the plane will lose thrust and stop. Presumably, the will have to winch it down by means of ropes suspended from the plane.