ins in flight alignement not updating heading

[dave76]

i made a wrong ins alignement on ground and then i tried to use ifa with aircraft in flight steady and level, confirmed heading and then switched to nav but the wrong heading and attitude on hud persisted......any suggestion to fix it?

[Frederf]

You're supposed to set magnetic heading during the first 20 sec of either auto or manual in-flight alignment. Use the HDG knob on the EHSI to select the heading. You'll have to hold a particular mouse button or it will move the HDG bug instead.