Not sure if its diff...b/w the bus and 767 or 737 but every turnaround we do a full alignment (either for GPS or non GPS equipped jets). Only takes 10 mins, and you'd be hard pressed to do a ten minute turnaround unless the pax all have ejector seats. (presume ADIR is just an integrated IRS plus air data comp?)
Not sure what effect it would have on pax route map though.....