Just a bit of info regarding some of the companies you mentionned:
Air Consul SA: operates a PA31 out of Malabo.
Avirex Guinée Equatoriale: no aircraft per se, it's just a subsidiary of Avirex Gabon of Libreville, probably used to facilitate dealing with local authorities.
Ecuatorial Cargo: at least 1 IL76.
GETRA — Guinea Ecuatorial de Transportes Aéreos: at least 1 AN24.
UTAGE — Unión de Transporte Aéreo de Guinea Ecuatorial: at least 1 AN24.
The other ones, I can't remember (info is 9 months old), but several operate AN24 & 26 and/or YK40 with eastern European crews. EG is a bit like the farwest in many respects, but quickly improving. There are definitely opportunities that will come up there.
