Originally Posted by
buzzpat
It's VSD, or Vertical Situation Display. It provides vertical awareness along with terrain. It's great in mountainous areas and on RNAV arrivals with a lot of crossing points and restrictions. Think the LAX arrivals for example. It's pretty awesome. A lot of guys don't use it though.
Is it similar to what the embraers have? Every time I've been on their Jumpseat, I've thought to myself that their nav system was definitely not DC-9 lead in training.