I'm deeply embarassed to tell you I have no idea . . . . that would account (at least partially) for our different experiences, re disconnects, maybe mine is dumbly following last good signal, I'm on 800, and you ? If it was a customer option mind you, I can't imagine MY employer paying extra for it. I'm in the Sim soon, so I am going to try and find someone who might know better than me. There was a long thread on here a while back (in Tech Log) about whether the aircraft would autoland (NG that is, Classic not if I remember) single channel, don't think I finished reading it, must make the time. Enjoy those precious Day's Off.