Originally Posted by
GlueBall
So what are you telling us? That it’s normal just to enter the flight plan’s coordinates into the Delco Carousel-4A or Litton-72 box, assuming that they’re the same as yesterday’s or last week’s and be done with it? Without cross-checking the positions on a map or plotting chart? The crew had over 5 hours en route to dabble with that. And it was Collins’ first Antarctica trip.
Exactly, that's the point I was trying to make before. Just because you THINK you know where you are, doesn't mean are you, so until you KNOW, you don't descend below MSA. It's quite simple really!