Some aviation in Africa is as safe as the best in class throughout the world. Overall, unfortunately Africa has a bad safety record. The statistics speak for themselves.
Nigeria provides a good case study in the reasons why the hull loss rate in Africa is unacceptably high.
http://www.icao.int/highLevel/docs/HLM-AFI_Nigeria.pdf
The South African experience is better (but still not good in the GA area as a % of aircraft movements or hours flown).
http://www.caa.co.za/resource%20cent...Statistics.pdf
Some general comments on the African experience
http://flightsafety.org/asw/july08/a...y08_p18-22.pdf