Skip to main content
Aviation

Return to Question

Improved title
Link
SentryRaven
SentryRaven
  • 15.7k
  • 64
  • 88

Variations What are the different variants of ILS intrumentation?

Tweeted twitter.com/#!/StackAviation/status/478621913447546880
Source Link
Jamiec ♦
Jamiec ♦
  • 35.7k
  • 9
  • 131
  • 167

Variations of ILS intrumentation

Background: I'm a huge aviation enthusiast with a lapsed PPL. Have flown some larger aircraft on MSFS, but never flown anything in real life bigger than a C172.

I was lucky enough to do a bit of Simulator time on a B737 simulator this weekend. One thing I wanted to try out was an ILS approach in very limited visibility. The instructor set me up, and asked what ILS display I was "used to seeing". I described it, and she set it to this - totally what I was expecting:

enter image description here
(Thats the purple vertical bar for centre line and purple blip for glide slope).

So, my question is, what was the "Other" option? This may be specific for a B737, or it may not. Why are there 2 types of instrumentation for an ILS approach? Is one a newer system, and is it therefore preferred.