L410īs
Bonjour and that sort.
There are some in Nigeria and Malabo. Sorry do not have any company info on those. Neither do I have any info on Western Africa.
TAC from Congo Brazzaville has 1 crewd by Russians with very little flying like 150 hours a year. apparently only Russians to this type as salaries are not up to western standards.
Business Express has, I think 2 newer models flying to and from DRC and Congo Brazzaville. I have seen these in Pointe Noire, Kinshasa, Brazzaville and Libreville. I know they have European pilots on those. Seem to remeber seeing soem L410īs in Libreville as well other than Business Express.
Hope this helped a little