Reference the East African Airways c/s. Flew for Tradewinds in 1970s and we did a large number of cargo sub charters for East African. We were allocated "Simba" For these flights. One night we were called "Seychelles" by ATC in London FIR, when I then looked it up SIMBA was officially the callsign of "Seychelles and Kilimanjairo Air Transport" - I believe a wholly owned subsidiary of East African