We never learned Advanced Flight, as far as I can tell from our records. The Council would know this from the diplomacy screen (it would be a tech they could sell/trade to us). Advanced Flight gives us Hellicopters; I'm not sure what else. From our diplomat, they would know which age we are in. I can't get CivAssistII to open up a save game. It throws an Exception when I try to open an MTDG save file, whether _SABER or _FREE.