Hi, all, newbie here. just a few questions about FMC, and GPS and ILSok, so this is what I understand so far. The FMC is basically the autopilot. So this flies the plane. Then I use ILS to land the plane. Now can somebody sort this out for me. Back in the day when they did not have gps, what did they use, did they also use ILS. Today they use GPS and ILS ( or is there a newer technology for the glide slope etc)So when do you which system. Sorry if this is very basic I'm trying to learn. also are there any good tutorials out there. thanks.