I've just landed at LIRF Fumicino, Rome and while the aircraft made the correct directions for the runway, it quickly became apparent that it was not losing altitude so I had to land manually. That was ok, but If I'm on ILS I expect the aircraft to more or less put itself down for me.
Any ideas anyone please? Incidentally, the aircraft was the Embraer 550.
That is not enough information. So we would need to see your log in zip form. In any case once you are on the glide slope only a combination of you and the aircraft autopilot will make the correct decisions for the let down. Neither PF3 nor real ATC will issue any instructions during that phase other than a speed control, landing clearance or a go-around. We will also need to see in zip form the contents of the FPP directory found in the flight directory. We can then check for any problems with your original flight plan. Most commonly users have a fpl that is too high at the arrival point because they don't take into account height and speed restrictions during the approach phase.