Not only in Africa
In a bar, that over looks a tarmac, in Western Europe a few years ago and spotted what were obviously Eastern Block crew drinking up big time. Thought well obviously had a good day and finishing off with an after landing drink. Nothing wrong with that I through and better than having the landing drink in the a/c, even on the ground.
Oh no. 20 minutes later the same morons were walking out to the aircraft (IL76). The taxing of the aircraft out to the holding point was something to behold and any F1 boss would have sat up and taken notice.
Yes I was probably guilty too in my own way for not notifying the authorities. If I had had a telephone number quickly to hand I would have.