Hi, I'm currently using payware Navigraph SID/STAR's for my PMDG aircraft range. Cliche but my home airport is LHR. When you a departing SID or arrival ILS. The way points are off line from the approach line already drawn. Also i know my final heading should be 272 for 27R. But i'm getting 275. The fmc pre-programs 272, but on the PFD it is showing 274. Any ideas how to get back my accuracy?CheersJames

Hi, I'm currently using payware Navigraph SID/STAR's for my PMDG aircraft range. Cliche but my home airport is LHR. When you a departing SID or arrival ILS. The way points are off line from the approach line already drawn. Also i know my final heading should be 272 for 27R. But i'm getting 275. The fmc pre-programs 272, but on the PFD it is showing 274. Any ideas how to get back my accuracy?CheersJames

I should also state this problem is in all airports and all aircraft are showing wrong headings, as show by pressing "y" slew button!!Your help is needed!CheersJames Andrews

Best to go to Navigraph's support forum.