I think it is Africa that opperates the oldest aircrafts in average. I belive that a lot of the conteries are using B707, DC8 etc. also on scenduled passenger flights.
On the question "how safe it is" I will answer that it will depend on wich country you are flying in.
Countries like South Africa, Kenya, Egypt, Tunisia and other which are popular for tourists I think have average safty.
In Zaire, Chad... I would thinked about it before I've entered an airplane.
But as in all other conteries it depends on teh airline, and how good the mainteans their "birds"
I hope this helps, but correct me if I'm wrong.
G'Day from Tg 747-300 and Northern Europe
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