Hi there. First, I apologize if this is not the right board to post about this.
Now since I woke up today, I have been noticing a plane circling the sky for hours. I finally looked at it up online and stumbled on this website and figured out it was this Airbus A310 (twin-jet).
I was worried at first that it may have been doing some go-around because of some mechanical failures, but now it seem that the plane has finally stopped going in circle and went back to the airport.
Now my question is, why was it doing that? Is it common to test aircrafts in such a way?
I am hoping you flight enthusiast people could help me on that one !