Originally Posted by
shfo
You do not start the timer so you can drop down and do the localizer approach you start the timer so you know when to go missed. Has anyone done an ILS with obstacles on both sides of centerline and the missed approach procedure has a turn? If you lose everything and immediately start the missed approach procedure you could run into a building or terrain.
This is exactly the reason that I was thinking of when I started reading this thread, but I was just too lazy to write it out, but I second this idea. There are definitely some ILS's out there that you can't turn early, and if you lose GS without your time, then you'll have absolutely no idea where you are, or when you are supposed to turn...