(19 May 2016, 7:10 pm)South Tyne Lad wrote 8297 doesn't have NSA's, Its only function is showing CCTV images from inside the bus.
Mechanically wise its also one of the better ones too, 8299 and 8301 are the worst on here in my opinion.
3814 certainly doesn't have NSAs, either. With that in mind, I think he could have been on about destinations and other electrical issues as mentioned in the post he was replying to.