The vast majority of flying done in Africa is performed by South African contract companies. Most fly B200s/1900s and caravans. Also some airvan work about. Lots of work going at times but then the amount of SA low time pilots who are applying to these companies on a daily basis is also very high. The SA aviation industry is actually fairly large in the contract side and the country produces hordes of new pilots a year due to low cost of training. Worth a shot though. Some big names are executive turbine, fedair, NAC etc. Many companies around, most with contracts for work up in central and north african countries like DRC, Sudan and Algeria.