"Africa is still the wild frontier" doesn't really apply here as far as the technical state of the aircraft goes. Judging by those names, all on board were Swiss. Ten to one they would've brought the plane with them from Switzerland. You see lots of little Swiss aircraft in and around the Med.
How Ironic. For those of you who dont remember. There was a PC-12 that bought the farm near Wilson Nairobi, about 6-7 years ago. Right out of Switzerland.
As I recall it was ground fog/scudd running into a giant rock face at cruise speed.