A couple of related question for you Snoopy. Is the HUD in the A-10 not certified for IFR? And what about the nav database in the CDU? On my old legacy MC-130, we had no HUD and the nav database was not certified but on our newest MC-130J, the HUD is the primary flight instrument and the nav database is certified. Hell, we don't even compute TOLD anymore, we just plug in a few numbers into the mission computer and read it off.