Where would the IRS be located in the 747? I found the pages dealing with it's operation, but can't seem to find a photo of it or it's location? I'm approaching 'geezer' status, so I may have missed it somewhere, but i thought I looked pretty good. Fitz

Hello FitzThere are three rotary switches associated with L,C and R IRS with positions OFF, ALIGN, NAV and ATT. They are positioned on the overhead panel on the left side above the electrical panel. You can see them on some screenshots on the PMDG page featuring the VC.Happy waiting ;-)Michael Jost

Edit-Michael beat me to it.Nice name by the way. ;)

Overhead panel.Michael J.