Hi  all

I have just install 4.3, and since this I am have trouble with the IRS, when using 4.2 and bellow I was used to getting in the cockpit and going straight to the top right hand O/H panel and turning all 3 switches to NAV and the turning on the Yaw Dampers and all would be good. but now when i turn the first switch (the left one) to align to get to NAv I  get a 5 in the number boxes and then when all three are set to NAV all i get is T 026 in the left side of the number boxs and no more. Also it is flashing Align in all three  L/C/R.

Please help .

Mark P