S.A.
Most of the Senegal Airlines pilots are former Air Afrique Pilots (Captains and Instructors inclueded), flying worldwide on DC8, DC10, A300B4, A300B6, A310, A330, they also flew with Air Senegal International on B737-700 on international routes.
They are very experienced (more than 9000 hours of flight on jets) and have a strong knowledge in English (ICAO Level 4).
Before being recruited by Senegal Airlines, they went thru interviews (Emirats Airways) and SIM Checks (Ethiopian Airlines A320 Simulator), their SIM checks are up to date.
Just wait for investigations to know what went wrong at GABS.
FYI: I use to fly with those guys when I was at Air Afrique too.