Don't mean to take over the thread but i have an IRS question to add.
In my company after full alignment our SOP's state we should put the ISDU setting to show IRS 3 with wind, this is with no explination.
Could someone tell me if they also do this where they work and why? if the ND is showing wind form IRS1+2 on the capt and fo screens, why would we need it on the over head for IRS 3....
Thanking you!
